# List of former members of the United States House of Representatives (S)

This is a complete list of former members of the United States House of Representatives whose last names begin with the letter S.

## Number of years/terms representative/delegate has served

The number of years the representative/delegate has served in Congress indicates the number of terms the representative/delegate has. Note the representative/delegate can also serve non-consecutive terms if the representative/delegate loses election and wins re-election to the House.
* 2 years – 1 or 2 terms
* 4 years – 2 or 3 terms
* 6 years – 3 or 4 terms
* 8 years – 4 or 5 terms
* 10 years – 5 or 6 terms
* 12 years – 6 or 7 terms
* 14 years – 7 or 8 terms
* 16 years – 8 or 9 terms
* 18 years – 9 or 10 terms
* 20 years – 10 or 11 terms
* 22 years – 11 or 12 terms
* 24 years – 12 or 13 terms
* 26 years – 13 or 14 terms
* 28 years – 14 or 15 terms
* 30 years – 15 or 16 terms
* 32 years – 16 or 17 terms
* 34 years – 17 or 18 terms
* 36 years – 18 or 19 terms
* 38 years – 19 or 20 terms
* 40 years – 20 or 21 terms
* 42 years – 21 or 22 terms
* 44 years – 22 or 23 terms
* 46 years – 23 or 24 terms
* 48 years – 24 or 25 terms
* 50 years – 25 or 26 terms
* 52 years – 26 or 27 terms
* 54 years – 27 or 28 terms
* 56 years – 28 or 29 terms
* 58 years – 29 or 30 terms
| Representative/Delegate | Years | State/Territory | Party | Lifespan |
| Adolph J. Sabath | 1907–1952 | Illinois | Democratic | 1866–1952 |
| Alvah Sabin | 1853–1855 | Vermont | Whig | 1793–1885 |
| Alvah Sabin | 1855–1857 | Vermont | Oppositionist | 1793–1885 |
| Lorenzo Sabine | 1852–1853 | Massachusetts | Whig | 1803–1877 |
| Gregorio Sablan | 2009–2021 | Northern Mariana Islands | Independent | 1955–present |
| Gregorio Sablan | 2021–2025 | Northern Mariana Islands | Democratic | 1955–present |
| Martin Olav Sabo | 1979–2007 | Minnesota | Democratic-Farmer-Labor | 1938–2016 |
| William A. Sackett | 1849–1853 | New York | Whig | 1811–1895 |
| Leon Sacks | 1937–1943 | Pennsylvania | Democratic | 1902–1972 |
| Antoni Sadlak | 1947–1959 | Connecticut | Republican | 1908–1969 |
| Thomas William Sadler | 1885–1887 | Alabama | Democratic | 1831–1896 |
| George G. Sadowski | 1933–1939 1943–1951 | Michigan | Democratic | 1903–1961 |
| Ebenezer Sage | 1809–1815 | New York | Democratic–Republican | 1755–1834 |
| Russell Sage | 1853–1855 | New York | Whig | 1816–1906 |
| Russell Sage | 1855–1857 | New York | Oppositionist | 1816–1906 |
| Pat Saiki | 1987–1991 | Hawaii | Republican | 1930–present |
| Peter Sailly | 1805–1807 | New York | Democratic–Republican | 1754–1826 |
| John Salazar | 2005–2011 | Colorado | Democratic | 1953–present |
| Bill Sali | 2007–2009 | Idaho | Republican | 1954–present |
| Joshua S. Salmon | 1899–1902 | New Jersey | Democratic | 1846–1902 |
| Matt Salmon | 1995–2001 2013–2017 | Arizona | Republican | 1958–present |
| William C. Salmon | 1923–1925 | Tennessee | Democratic | 1868–1925 |
| Leverett Saltonstall I | 1838–1843 | Massachusetts | Whig | 1783–1845 |
| William J. Samford | 1879–1881 | Alabama | Democratic | 1844–1901 |
| Thomas Sammons | 1803–1807 1809–1813 | New York | Democratic–Republican | 1762–1838 |
| Samuel C. Sample | 1843–1845 | Indiana | Whig | 1796–1855 |
| Ezekiel S. Sampson | 1875–1879 | Iowa | Republican | 1831–1892 |
| Zabdiel Sampson | 1817–1820 | Massachusetts | Democratic-Republican | 1781–1828 |
| Edmund W. Samuel | 1905–1907 | Pennsylvania | Republican | 1857–1930 |
| Green Berry Samuels | 1839–1841 | Virginia | Democratic | 1806–1859 |
| John C. Sanborn | 1947–1951 | Idaho | Republican | 1885–1968 |
| Loretta Sanchez | 1997–2017 | California | Democratic | 1960–present |
| Harry Sandager | 1939–1941 | Rhode Island | Republican | 1887–1955 |
| Archie D. Sanders | 1917–1933 | New York | Republican | 1857–1941 |
| Bernie Sanders | 1991–2007 | Vermont | Independent | 1941–present |
| Everett Sanders | 1917–1925 | Indiana | Republican | 1882–1950 |
| Jared Y. Sanders Jr. | 1934–1937 1941–1943 | Louisiana | Democratic | 1892–1960 |
| Jared Y. Sanders Sr. | 1917–1921 | Louisiana | Democratic | 1869–1944 |
| Morgan G. Sanders | 1921–1939 | Texas | Democratic | 1878–1956 |
| James T. Sandford | 1823–1825 | Tennessee | Democratic-Republican | N/A |
| Thomas Sandford | 1803–1807 | Kentucky | Democratic-Republican | 1762–1808 |
| John M. Sandidge | 1855–1859 | Louisiana | Democratic | 1817–1890 |
| John N. Sandlin | 1921–1937 | Louisiana | Democratic | 1872–1957 |
| Max Sandlin | 1997–2005 | Texas | Democratic | 1952–present |
| Charles W. Sandman Jr. | 1967–1975 | New Jersey | Republican | 1921–1985 |
| Joshua Sands | 1803–1805 1825–1827 | New York | Federalist | 1757–1835 |
| John Sanford | 1841–1843 | New York | Democrat | 1803–1857 |
| John Sanford | 1889–1893 | New York | Republican | 1851–1939 |
| John W. A. Sanford | 1835 | Georgia | Democratic | 1798–1870 |
| Jonah Sanford | 1830–1831 | New York | Democratic | 1790–1867 |
| Mark Sanford | 1995–2001 2013–2019 | South Carolina | Republican | 1960–present |
| Rollin B. Sanford | 1915–1921 | New York | Republican | 1874–1957 |
| Stephen Sanford | 1869–1871 | New York | Republican | 1826–1913 |
| George Sangmeister | 1989–1995 | Illinois | Democratic | 1931–2007 |
| Michael San Nicolas | 2019–2023 | Guam | Democratic | 1981–present |
| Alfred E. Santangelo | 1957–1963 | New York | Democratic | 1912–1978 |
| James David Santini | 1975–1983 | Nevada | Democratic | 1937–2015 |
| Rick Santorum | 1991–1995 | Pennsylvania | Republican | 1958–present |
| George Santos | 2023 | New York | Republican | 1988–present |
| William Fletcher Sapp | 1877–1881 | Iowa | Republican | 1824–1890 |
| William R. Sapp | 1853–1855 | Ohio | Whig | 1804–1875 |
| William R. Sapp | 1855–1857 | Ohio | Oppositionist | 1804–1875 |
| Ronald A. Sarasin | 1973–1979 | Connecticut | Republican | 1934–2023 |
| George W. Sarbacher Jr. | 1947–1949 | Pennsylvania | Republican | 1919–1973 |
| John Sarbanes | 2007–2025 | Maryland | Democratic | 1962–present |
| Paul Sarbanes | 1971–1977 | Maryland | Democratic | 1933–2020 |
| Aaron A. Sargent | 1861–1863 1869–1873 | California | Republican | 1827–1887 |
| Bill Sarpalius | 1989–1995 | Texas | Democratic | 1948–present |
| Lansdale Ghiselin Sasscer | 1939–1953 | Maryland | Democratic | 1893–1964 |
| Dave E. Satterfield Jr. | 1937–1945 | Virginia | Democratic | 1894–1946 |
| David E. Satterfield III | 1965–1981 | Virginia | Democratic | 1920–1988 |
| Edward Sauerhering | 1895–1899 | Wisconsin | Republican | 1864–1924 |
| Dalip Singh Saund | 1957–1963 | California | Democratic | 1899–1973 |
| Edward W. Saunders | 1906–1920 | Virginia | Democratic | 1860–1921 |
| Romulus M. Saunders | 1821–1825 | North Carolina | Democratic-Republican | 1791–1867 |
| Romulus M. Saunders | 1825–1827 1841–1845 | North Carolina | Democratic | 1791–1867 |
| Harry Sauthoff | 1935–1939 1941–1945 | Wisconsin | Progressive | 1879–1966 |
| Charles R. Savage | 1945–1947 | Washington | Democratic | 1906–1976 |
| Gus Savage | 1981–1993 | Illinois | Democratic | 1925–2015 |
| John Savage | 1815–1819 | New York | Democratic–Republican | 1779–1863 |
| John H. Savage | 1849–1853 1855–1859 | Tennessee | Democratic | 1815–1904 |
| John S. Savage | 1875–1877 | Ohio | Democratic | 1841–1884 |
| Cullen Sawtelle | 1845–1847 1849–1851 | Maine | Democratic | 1805–1887 |
| Harold S. Sawyer | 1977–1985 | Michigan | Republican | 1920–2003 |
| John G. Sawyer | 1885–1889 | New York | Republican | 1825–1898 |
| Lemuel Sawyer | 1807–1813 1817–1823 | North Carolina | Democratic-Republican | 1777–1852 |
| Lemuel Sawyer | 1825–1829 | North Carolina | Democratic | 1777–1852 |
| Lewis E. Sawyer | 1923 | Arkansas | Democratic | 1867–1923 |
| Philetus Sawyer | 1865–1875 | Wisconsin | Republican | 1816–1900 |
| Samuel L. Sawyer | 1879–1881 | Missouri | Independent Democrat | 1813–1890 |
| Samuel Tredwell Sawyer | 1837–1839 | North Carolina | Whig | 1800–1865 |
| Tom Sawyer | 1987–2003 | Ohio | Democratic | 1945–2023 |
| William Sawyer | 1845–1849 | Ohio | Democratic | 1803–1877 |
| Jim Saxton | 1984–2009 | New Jersey | Republican | 1943–present |
| Benjamin Say | 1808–1809 | Pennsylvania | Democratic-Republican | 1755–1813 |
| Joseph D. Sayers | 1885–1899 | Texas | Democratic | 1841–1929 |
| Henry B. Sayler | 1873–1875 | Indiana | Republican | 1836–1900 |
| Milton Sayler | 1873–1879 | Ohio | Democratic | 1831–1892 |
| John P. Saylor | 1949–1973 | Pennsylvania | Republican | 1908–1973 |
| Alfred Moore Scales | 1857–1859 1875–1884 | North Carolina | Democratic | 1827–1892 |
| John F. Scamman | 1845–1847 | Maine | Democratic | 1786–1858 |
| Thomas E. Scanlon | 1941–1945 | Pennsylvania | Democratic | 1896–1955 |
| Joe Scarborough | 1995–2001 | Florida | Republican | 1963–present |
| Robert B. Scarborough | 1901–1905 | South Carolina | Democratic | 1861–1927 |
| Henry C. Schadeberg | 1961–1965 1967–1971 | Wisconsin | Republican | 1913–1985 |
| Daniel Schaefer | 1983–1999 | Colorado | Republican | 1936–2006 |
| Edwin M. Schaefer | 1933–1943 | Illinois | Democratic | 1887–1950 |
| John C. Schafer | 1923–1933 1939–1941 | Wisconsin | Republican | 1893–1962 |
| Bob Schaffer | 1997–2003 | Colorado | Republican | 1962–present |
| Thomas D. Schall | 1915–1925 | Minnesota | Republican | 1878–1935 |
| Mark Schauer | 2009–2011 | Michigan | Democratic | 1961–present |
| Richard Schell | 1874–1875 | New York | Democratic | 1810–1879 |
| Abraham H. Schenck | 1815–1817 | New York | Democratic-Republican | 1775–1831 |
| Ferdinand Schureman Schenck | 1833–1837 | New Jersey | Democratic | 1790–1860 |
| Paul F. Schenck | 1951–1965 | Ohio | Republican | 1899–1968 |
| Robert C. Schenck | 1843–1851 | Ohio | Whig | 1809–1890 |
| Robert C. Schenck | 1863–1871 | Ohio | Republican | 1809–1890 |
| Lynn Schenk | 1993–1995 | California | Democratic | 1945–present |
| Gordon H. Scherer | 1953–1963 | Ohio | Republican | 1906–1988 |
| William J. Scherle | 1967–1975 | Iowa | Republican | 1923–2003 |
| Abraham M. Schermerhorn | 1849–1853 | New York | Whig | 1791–1855 |
| Simon J. Schermerhorn | 1893–1895 | New York | Democratic | 1827–1901 |
| James H. Scheuer | 1965–1973 1975–1993 | New York | Democratic-Liberal | 1920–2005 |
| Adam Schiff | 2001–2024 | California | Democratic | 1960–present |
| Steven Schiff | 1989–1998 | New Mexico | Republican | 1947–1998 |
| A. C. Schiffler | 1939–1941 1943–1945 | West Virginia | Republican | 1889–1970 |
| Bobby Schilling | 2011–2013 | Illinois | Republican | 1964–2021 |
| Charles Reginald Schirm | 1901–1903 | Maryland | Republican | 1864–1918 |
| Gale Schisler | 1965–1967 | Illinois | Democratic | 1933–2020 |
| Gustav Schleicher | 1875–1879 | Texas | Democratic | 1823–1879 |
| William Schley | 1833–1835 | Georgia | Democratic | 1786–1858 |
| John R. Schmidhauser | 1965–1967 | Iowa | Democratic | 1922–2018 |
| Jean Schmidt | 2005–2013 | Ohio | Republican | 1951–present |
| John G. Schmitz | 1970–1973 | California | Republican | 1930–2001 |
| Gustav A. Schneebeli | 1905–1907 | Pennsylvania | Republican | 1853–1923 |
| Herman T. Schneebeli | 1960–1977 | Pennsylvania | Republican | 1907–1982 |
| Claudine Schneider | 1981–1991 | Rhode Island | Republican | 1947–present |
| George J. Schneider | 1923–1933 | Wisconsin | Republican | 1877–1939 |
| George J. Schneider | 1935–1939 | Wisconsin | Progressive | 1877–1939 |
| Aaron Schock | 2009–2015 | Illinois | Republican | 1981–present |
| John L. Schoolcraft | 1849–1853 | New York | Whig | 1804–1860 |
| Cornelius C. Schoonmaker | 1791–1793 | New York | Anti–Administration | 1745–1796 |
| Marius Schoonmaker | 1851–1853 | New York | Whig | 1811–1894 |
| Kurt Schrader | 2009–2023 | Oregon | Democratic | 1951–present |
| Ed Schrock | 2001–2005 | Virginia | Republican | 1941–present |
| Pat Schroeder | 1973–1997 | Colorado | Democratic | 1940–2023 |
| Bill Schuette | 1985–1991 | Michigan | Republican | 1953–present |
| Leonard W. Schuetz | 1931–1944 | Illinois | Democratic | 1887–1944 |
| William T. Schulte | 1933–1943 | Indiana | Democratic | 1890–1966 |
| Dick Schulze | 1975–1993 | Pennsylvania | Republican | 1929–present |
| John G. Schumaker | 1869–1871 1873–1877 | New York | Democratic | 1826–1905 |
| Chuck Schumer | 1981–1999 | New York | Democratic | 1950–present |
| Martin G. Schuneman | 1805–1807 | New York | Democratic–Republican | 1764–1827 |
| James Schureman | 1789–1791 | New Jersey | Pro-Administration | 1756–1824 |
| James Schureman | 1797–1799 1813–1815 | New Jersey | Federalist | 1756–1824 |
| Philip Jeremiah Schuyler | 1817–1819 | New York | Federalist | 1768–1835 |
| George B. Schwabe | 1945–1949 1951–1952 | Oklahoma | Republican | 1886–1952 |
| Max Schwabe | 1943–1949 | Missouri | Republican | 1905–1983 |
| Allyson Schwartz | 2005–2015 | Pennsylvania | Democratic | 1948–present |
| John Schwartz | 1859–1860 | Pennsylvania | Anti-Lecompton Democratic | 1793–1860 |
| Joe Schwarz | 2005–2007 | Michigan | Republican | 1937–present |
| Richard Schweiker | 1961–1969 | Pennsylvania | Republican | 1926–2015 |
| Fred Schwengel | 1955–1965 1967–1973 | Iowa | Republican | 1906–1993 |
| Pius Schwert | 1939–1941 | New York | Democratic | 1892–1941 |
| James P. Scoblick | 1946–1949 | Pennsylvania | Republican | 1909–1981 |
| Glenni W. Scofield | 1863–1875 | Pennsylvania | Republican | 1817–1891 |
| Byron N. Scott | 1935–1939 | California | Democratic | 1903–1991 |
| Charles Frederick Scott | 1901–1911 | Kansas | Republican | 1860–1938 |
| Charles L. Scott | 1857–1861 | California | Democratic | 1827–1899 |
| Frank D. Scott | 1915–1927 | Michigan | Republican | 1878–1951 |
| George Cromwell Scott | 1912–1915 1917–1919 | Iowa | Republican | 1864–1948 |
| Hardie Scott | 1947–1953 | Pennsylvania | Republican | 1907–1999 |
| Harvey D. Scott | 1855–1857 | Indiana | Oppositionist | 1818–1891 |
| Hugh Scott | 1941–1945 1947–1959 | Pennsylvania | Republican | 1900–1994 |
| John Scott | 1816–1817 1817–1821 1821–1825 | Missouri | Democratic-Republican | 1785–1861 |
| John Scott | 1825–1827 | Missouri | National Republican | 1785–1861 |
| John Scott | 1829–1831 | Pennsylvania | Democratic | 1784–1850 |
| John G. Scott | 1863–1865 | Missouri | Democratic | 1819–1892 |
| John R. K. Scott | 1915–1919 | Pennsylvania | Republican | 1873–1945 |
| Lon A. Scott | 1921–1923 | Tennessee | Republican | 1888–1931 |
| Owen Scott | 1891–1893 | Illinois | Democratic | 1848–1928 |
| Ralph James Scott | 1957–1967 | North Carolina | Democratic | 1905–1983 |
| Thomas Scott | 1789–1791 1793–1795 | Pennsylvania | Pro-Administration | 1739–1796 |
| Tim Scott | 2009–2013 | South Carolina | Republican | 1965–present |
| William Lawrence Scott | 1885–1889 | Pennsylvania | Democratic | 1828–1891 |
| William L. Scott | 1967–1973 | Virginia | Republican | 1915–1997 |
| Jonathan Scoville | 1880–1883 | New York | Democratic | 1830–1891 |
| George W. Scranton | 1859–1861 | Pennsylvania | Republican | 1811–1861 |
| Joseph A. Scranton | 1881–1883 1885–1887 1889–1891 1893–1897 | Pennsylvania | Republican | 1838–1908 |
| William Scranton | 1961–1963 | Pennsylvania | Republican | 1917–2013 |
| Errett P. Scrivner | 1943–1959 | Kansas | Republican | 1898–1978 |
| Thomas E. Scroggy | 1905–1907 | Ohio | Republican | 1843–1915 |
| James G. Scrugham | 1933–1942 | Nevada | Democratic | 1880–1945 |
| Henry J. Scudder | 1873–1875 | New York | Republican | 1825–1886 |
| Hubert B. Scudder | 1949–1959 | California | Republican | 1888–1968 |
| Isaac W. Scudder | 1873–1875 | New Jersey | Republican | 1816–1881 |
| John A. Scudder | 1810–1811 | New Jersey | Democratic-Republican | 1759–1836 |
| Townsend Scudder | 1899–1901 1903–1905 | New York | Democratic | 1865–1960 |
| Tredwell Scudder | 1817–1819 | New York | Democratic-Republican | 1778–1834 |
| Zeno Scudder | 1851–1854 | Massachusetts | Whig | 1807–1857 |
| Edward Scull | 1887–1893 | Pennsylvania | Republican | 1818–1900 |
| Thomas J. Scully | 1911–1921 | New Jersey | Democratic | 1868–1921 |
| Richardson A. Scurry | 1851–1853 | Texas | Democratic | 1811–1862 |
| Henry J. Seaman | 1845–1847 | New York | American | 1805–1861 |
| John A. Searing | 1857–1859 | New York | Democratic | 1805–1876 |
| William J. Sears | 1915–1929 1933–1937 | Florida | Democratic | 1874–1944 |
| Willis G. Sears | 1923–1931 | Nebraska | Republican | 1860–1949 |
| Andrea Seastrand | 1995–1997 | California | Republican | 1941–present |
| Ebenezer Seaver | 1803–1813 | Massachusetts | Democratic-Republican | 1763–1844 |
| Keith Sebelius | 1969–1981 | Kansas | Republican | 1916–1982 |
| James Seccombe | 1939–1941 | Ohio | Republican | 1893–1970 |
| Robert T. Secrest | 1933–1942 1949–1954 1963–1967 | Ohio | Democratic | 1904–1994 |
| James Seddon | 1845–1847 1849–1851 | Virginia | Democratic | 1815–1880 |
| Charles B. Sedgwick | 1859–1863 | New York | New Pro-Administration | 1815–1883 |
| Theodore Sedgwick | 1789–1795 | Massachusetts | Pro-Administration | 1746–1813 |
| Theodore Sedgwick | 1795–1796 1799–1801 | Massachusetts | Federalist | 1746–1813 |
| John E. Seeley | 1871–1873 | New York | Republican | 1810–1875 |
| Horace Seely-Brown Jr. | 1947–1949 1951–1959 1961–1963 | Connecticut | Republican | 1908–1982 |
| Julius Hawley Seelye | 1875–1877 | Massachusetts | Independent | 1824–1895 |
| John J. Seerley | 1891–1893 | Iowa | Democratic | 1852–1931 |
| Joseph Segar | 1862–1863 | Virginia | Unionist | 1804–1880 |
| George N. Seger | 1923–1940 | New Jersey | Republican | 1866–1940 |
| Francis Seiberling | 1929–1933 | Ohio | Republican | 1870–1945 |
| John F. Seiberling | 1971–1987 | Ohio | Democratic | 1918–2008 |
| Shelley Sekula-Gibbs | 2006–2007 | Texas | Republican | 1953–present |
| Thomas J. Selby | 1901–1903 | Illinois | Democratic | 1840–1917 |
| Armistead I. Selden Jr. | 1953–1969 | Alabama | Democratic | 1921–1985 |
| Dudley Selden | 1833–1834 | New York | Democratic | 1794–1855 |
| Harry H. Seldomridge | 1913–1915 | Colorado | Democratic | 1864–1927 |
| Sam R. Sells | 1911–1921 | Tennessee | Republican | 1871–1935 |
| Conrad Selvig | 1927–1933 | Minnesota | Republican | 1877–1953 |
| Lewis Selye | 1867–1869 | New York | Republican | 1803–1883 |
| Benedict Joseph Semmes | 1829–1833 | Maryland | National Republican | 1789–1863 |
| Joe Sempolinski | 2022–2023 | New York | Republican | 1983–present |
| James Beverley Sener | 1873–1875 | Virginia | Republican | 1837–1903 |
| George E. Seney | 1883–1891 | Ohio | Anti-Administration | 1832–1905 |
| Joshua Seney | 1789–1792 | Maryland | Anti-Administration | 1756–1798 |
| George F. Senner Jr. | 1963–1967 | Arizona | Democratic | 1921–2007 |
| Jim Sensenbrenner | 1979–2021 | Wisconsin | Republican | 1943–present |
| William Tandy Senter | 1843–1845 | Tennessee | Whig | 1801–1848 |
| John Sergeant | 1815–1823 | Pennsylvania | Federalist | 1779–1852 |
| John Sergeant | 1827–1829 | Pennsylvania | National Republican | 1779–1852 |
| John Sergeant | 1837–1841 | Pennsylvania | Whig | 1779–1852 |
| José E. Serrano | 1990–2021 | New York | Democratic | 1943–present |
| Gustavus Sessinghaus | 1883 | Missouri | Republican | 1838–1887 |
| Walter L. Sessions | 1871–1875 1885–1887 | New York | Republican | 1820–1896 |
| Joe Sestak | 2007–2011 | Pennsylvania | Democratic | 1951–present |
| Evan E. Settle | 1897–1899 | Kentucky | Democratic | 1848–1899 |
| Thomas Settle | 1817–1821 | North Carolina | Democratic-Republican | 1789–1857 |
| Thomas Settle | 1893–1897 | North Carolina | Republican | 1865–1919 |
| Luther Severance | 1843–1847 | Maine | Whig | 1797–1855 |
| Ambrose H. Sevier | 1828–1836 | Arkansas | None | 1801–1848 |
| John Sevier | 1790–1791 | North Carolina | Pro-Administration | 1745–1815 |
| John Sevier | 1811–1815 | Tennessee | Democratic-Republican | 1745–1815 |
| Charles S. Sewall | 1832–1833 1843 | Maryland | Democratic | 1779–1848 |
| Samuel Sewall | 1796–1800 | Massachusetts | Federalist | 1757–1814 |
| James Lindsay Seward | 1853–1859 | Georgia | Democratic | 1813–1886 |
| Leonidas Sexton | 1877–1879 | Indiana | Republican | 1827–1880 |
| Adam Seybert | 1809–1815 1817–1819 | Pennsylvania | Democratic-Republican | 1773–1825 |
| David L. Seymour | 1843–1845 1851–1853 | New York | Democratic | 1803–1867 |
| Edward W. Seymour | 1883–1887 | Connecticut | Democratic | 1832–1892 |
| Henry W. Seymour | 1888–1889 | Michigan | Republican | 1834–1906 |
| Origen S. Seymour | 1851–1855 | Connecticut | Democratic | 1804–1881 |
| Thomas H. Seymour | 1843–1845 | Connecticut | Democratic | 1807–1868 |
| William Seymour | 1835–1837 | New York | Democratic | 1775–1848 |
| John W. Shackelford | 1881–1883 | North Carolina | Democratic | 1844–1883 |
| Dorsey W. Shackleford | 1899–1919 | Missouri | Democratic | 1853–1936 |
| John Shadegg | 1995–2011 | Arizona | Republican | 1949–present |
| Jacob K. Shafer | 1869–1871 | Idaho | Democratic | 1823–1876 |
| Paul W. Shafer | 1937–1954 | Michigan | Republican | 1893–1954 |
| Joseph Crockett Shaffer | 1929–1931 | Virginia | Republican | 1880–1958 |
| John F. Shafroth | 1895–1897 | Colorado | Republican | 1854–1922 |
| John F. Shafroth | 1897–1903 | Colorado | Silver Republican | 1854–1922 |
| John F. Shafroth | 1903–1904 | Colorado | Democratic | 1854–1922 |
| Donna Shalala | 2019–2021 | Florida | Democratic | 1941–present |
| Ashton C. Shallenberger | 1901–1903 1915–1919 1923–1929 1931–1935 | Nebraska | Democratic | 1862–1938 |
| William S. Shallenberger | 1877–1883 | Pennsylvania | Republican | 1839–1914 |
| Bob Shamansky | 1981–1983 | Ohio | Democratic | 1927–2011 |
| George S. Shanklin | 1865–1867 | Kentucky | Democratic | 1807–1883 |
| John P. C. Shanks | 1861–1863 1867–1875 | Indiana | Republican | 1826–1901 |
| James A. Shanley | 1935–1943 | Connecticut | Democratic | 1896–1965 |
| James Shannon | 1979–1985 | Massachusetts | Democratic | 1952–present |
| Joe Shannon | 1931–1943 | Missouri | Democratic | 1867–1943 |
| Richard C. Shannon | 1895–1899 | New York | Republican | 1839–1920 |
| Thomas Shannon | 1826–1827 | Ohio | Democratic-Republican | 1786–1843 |
| Thomas Bowles Shannon | 1863–1865 | California | Republican | 1827–1897 |
| Wilson Shannon | 1853–1855 | Ohio | Democratic | 1802–1877 |
| Edgar A. Sharp | 1945–1947 | New York | Republican | 1876–1948 |
| Philip Sharp | 1975–1995 | Indiana | Democratic | 1942–present |
| Solomon P. Sharp | 1813–1817 | Kentucky | Democratic-Republican | 1787–1825 |
| William G. Sharp | 1909–1914 | Ohio | Democratic | 1859–1922 |
| Peter Sharpe | 1823–1825 | New York | Democratic-Republican | 1777–1842 |
| Cassius M. Shartel | 1905–1907 | Missouri | Republican | 1860–1943 |
| William B. Shattuc | 1897–1903 | Ohio | Republican | 1841–1911 |
| Aaron Shaw | 1857–1859 1883–1885 | Illinois | Democratic | 1811–1887 |
| Albert D. Shaw | 1900–1901 | New York | Republican | 1841–1901 |
| Clay Shaw | 1981–2007 | Florida | Republican | 1939–2013 |
| Frank T. Shaw | 1885–1889 | Maryland | Democratic | 1841–1923 |
| George B. Shaw | 1893–1894 | Wisconsin | Republican | 1854–1894 |
| Guy L. Shaw | 1921–1923 | Illinois | Republican | 1881–1950 |
| Henry Shaw | 1817–1821 | Massachusetts | Democratic-Republican | 1788–1857 |
| Henry M. Shaw | 1853–1855 1857–1859 | North Carolina | Democratic | 1819–1864 |
| John G. Shaw | 1895–1897 | North Carolina | Democratic | 1859–1932 |
| Samuel Shaw | 1808–1813 | Vermont | Democratic-Republican | 1768–1827 |
| Tristram Shaw | 1839–1843 | New Hampshire | Democratic | 1786–1843 |
| Chris Shays | 1987–2009 | Connecticut | Republican | 1945–present |
| Carol Shea-Porter | 2007–2011 2013–2015 2017–2019 | New Hampshire | Democratic | 1952–present |
| James Sheafe | 1799–1801 | New Hampshire | Federalist | 1755–1829 |
| James Sheakley | 1875–1877 | Pennsylvania | Democratic | 1829–1917 |
| Charles Christopher Sheats | 1873–1875 | Alabama | Republican | 1839–1904 |
| Timothy P. Sheehan | 1951–1959 | Illinois | Republican | 1909–2000 |
| Daniel Sheffer | 1837–1839 | Pennsylvania | Democratic | 1783–1880 |
| Daniel Sheffey | 1809–1817 | Virginia | Federalist | 1770–1830 |
| William Paine Sheffield Sr. | 1861–1863 | Rhode Island | Unionist | 1820–1907 |
| William Paine Sheffield Jr. | 1909–1911 | Rhode Island | Republican | 1857–1919 |
| Richard Shelby | 1979–1987 | Alabama | Democratic | 1934–present |
| Carlos D. Shelden | 1897–1903 | Michigan | Republican | 1840–1904 |
| Lionel Allen Sheldon | 1869–1875 | Louisiana | Republican | 1828–1917 |
| Porter Sheldon | 1869–1871 | New York | Republican | 1831–1908 |
| George W. Shell | 1891–1895 | South Carolina | Democratic | 1831–1899 |
| Samuel Shellabarger | 1861–1863 1865–1869 1871–1873 | Ohio | Republican | 1817–1896 |
| Charles M. Shelley | 1877–1881 1882–1885 | Alabama | Democratic | 1833–1907 |
| John F. Shelley | 1949–1964 | California | Democratic | 1905–1974 |
| Samuel A. Shelton | 1921–1923 | Missouri | Republican | 1858–1948 |
| Charles Biddle Shepard | 1837–1839 | North Carolina | Whig | 1808–1843 |
| Charles Biddle Shepard | 1839–1841 | North Carolina | Democratic | 1808–1843 |
| William Shepard | 1797–1803 | Massachusetts | Federalist | 1737–1817 |
| William Biddle Shepard | 1829–1837 | North Carolina | National Republican | 1799–1852 |
| Karen Shepherd | 1993–1995 | Utah | Democratic | 1940–present |
| Matthias Shepler | 1837–1839 | Ohio | Democratic | 1790–1863 |
| Harry R. Sheppard | 1937–1965 | California | Democratic | 1885–1969 |
| John L. Sheppard | 1899–1902 | Texas | Democratic | 1852–1902 |
| Morris Sheppard | 1902–1913 | Texas | Democratic | 1875–1941 |
| Augustine Henry Shepperd | 1827–1833 | North Carolina | Democratic | 1792–1864 |
| Augustine Henry Shepperd | 1833–1837 | North Carolina | National Republican | 1792–1864 |
| Augustine Henry Shepperd | 1837–1839 1841–1843 1847–1851 | North Carolina | Whig | 1792–1864 |
| John S. Sherburne | 1793–1795 | New Hampshire | Anti-Administration | 1757–1830 |
| John S. Sherburne | 1795–1797 | New Hampshire | Democratic-Republican | 1757–1830 |
| Upton Sheredine | 1791–1793 | Maryland | Anti-Administration | 1740–1800 |
| George A. Sheridan | 1873–1875 | Louisiana | Liberal Republican | 1840–1896 |
| John E. Sheridan | 1939–1947 | Pennsylvania | Democratic | 1902–1987 |
| J. Swagar Sherley | 1903–1919 | Kentucky | Democratic | 1871–1941 |
| James S. Sherman | 1887–1891 1893–1909 | New York | Republican | 1855–1912 |
| John Sherman | 1855–1861 | Ohio | Republican | 1823–1900 |
| Judson W. Sherman | 1857–1859 | New York | Republican | 1808–1881 |
| Roger Sherman | 1789–1791 | Connecticut | Pro-Administration | 1721–1793 |
| Socrates N. Sherman | 1861–1863 | New York | Republican | 1801–1873 |
| Eliakim Sherrill | 1847–1849 | New York | Whig | 1813–1863 |
| William Crawford Sherrod | 1869–1871 | Alabama | Democratic | 1835–1919 |
| John C. Sherwin | 1879–1883 | Illinois | Republican | 1838–1904 |
| Don Sherwood | 1999–2007 | Pennsylvania | Republican | 1941–present |
| Henry Sherwood | 1871–1873 | Pennsylvania | Democratic | 1813–1896 |
| Isaac R. Sherwood | 1873–1875 | Ohio | Republican | 1835–1925 |
| Isaac R. Sherwood | 1907–1921 | Ohio | Democratic | 1835–1925 |
| Isaac R. Sherwood | 1923–1925 | Ohio | Republican | 1835–1925 |
| Samuel Sherwood | 1813–1815 | New York | Federalist | 1779–1862 |
| Samuel B. Sherwood | 1817–1819 | Connecticut | Federalist | 1767–1833 |
| George K. Shiel | 1861–1863 | Oregon | Democratic | 1825–1893 |
| Benjamin Glover Shields | 1841–1843 | Alabama | Democratic | 1811–1892 |
| Ebenezer J. Shields | 1835–1837 | Tennessee | National Republican | 1778–1846 |
| Ebenezer J. Shields | 1837–1839 | Tennessee | Whig | 1778–1846 |
| James Shields | 1829–1831 | Ohio | Democratic | 1762–1831 |
| John Shimkus | 1997–2021 | Illinois | Republican | 1958–present |
| William Norton Shinn | 1833–1837 | New Jersey | Democratic | 1782–1871 |
| Zebulon R. Shipherd | 1813–1815 | New York | Federalist | 1768–1841 |
| George E. Shipley | 1959–1979 | Illinois | Democratic | 1927–2003 |
| George Shiras III | 1903–1905 | Pennsylvania | Independent Republican | 1859–1942 |
| Benjamin F. Shively | 1884–1885 | Indiana | Anti-Monopolist | 1857–1916 |
| Benjamin F. Shively | 1887–1893 | Indiana | Democratic | 1857–1916 |
| Francis Edwin Shober | 1869–1873 | North Carolina | Democratic | 1831–1896 |
| Francis Emanuel Shober | 1903–1905 | New York | Democratic | 1860–1919 |
| Francis Shoemaker | 1933–1935 | Minnesota | Farmer-Labor | 1889–1958 |
| Lazarus D. Shoemaker | 1871–1875 | Pennsylvania | Republican | 1819–1893 |
| George W. Shonk | 1891–1893 | Pennsylvania | Republican | 1850–1900 |
| Dewey Short | 1929–1931 1935–1957 | Missouri | Republican | 1898–1979 |
| Don L. Short | 1959–1965 | North Dakota | Republican | 1903–1982 |
| Eli S. Shorter | 1855–1859 | Alabama | Democratic | 1823–1879 |
| Hugh Ike Shott | 1929–1933 | West Virginia | Republican | 1866–1953 |
| Richard G. Shoup | 1971–1975 | Montana | Republican | 1923–1995 |
| Jouett Shouse | 1915–1919 | Kansas | Democratic | 1879–1968 |
| Joseph B. Showalter | 1897–1903 | Pennsylvania | Republican | 1851–1932 |
| Jacob Shower | 1853–1855 | Maryland | Democratic | 1803–1879 |
| Ronnie Shows | 1999–2003 | Mississippi | Democratic | 1947–present |
| Milton W. Shreve | 1913–1915 1919–1921 | Pennsylvania | Republican | 1858–1939 |
| Milton W. Shreve | 1921–1923 | Pennsylvania | Independent Republican | 1858–1939 |
| Milton W. Shreve | 1923–1933 | Pennsylvania | Republican | 1858–1939 |
| Garner E. Shriver | 1961–1977 | Kansas | Republican | 1912–1998 |
| Alonzo C. Shuford | 1895–1899 | North Carolina | Populist | 1858–1933 |
| George A. Shuford | 1953–1959 | North Carolina | Democratic | 1895–1962 |
| Heath Shuler | 2007–2013 | North Carolina | Democratic | 1971–present |
| Joseph H. Shull | 1903–1905 | Pennsylvania | Democratic | 1848–1944 |
| Emanuel Shultz | 1881–1883 | Ohio | Republican | 1819–1912 |
| Norman D. Shumway | 1979–1991 | California | Republican | 1934–2022 |
| Bill Shuster | 2001–2019 | Pennsylvania | Republican | 1961–present |
| Bud Shuster | 1973–2001 | Pennsylvania | Republican | 1932–2023 |
| Abner W. Sibal | 1961–1965 | Connecticut | Republican | 1921–2000 |
| Henry H. Sibley | 1848–1849 1849–1853 | Wisconsin Minnesota | None | 1811–1891 |
| Jonas Sibley | 1823–1825 | Massachusetts | Democratic-Republican | 1762–1834 |
| Joseph C. Sibley | 1893–1895 1899–1901 | Pennsylvania | Democratic | 1850–1926 |
| Joseph C. Sibley | 1901–1907 | Pennsylvania | Republican | 1850–1926 |
| Mark H. Sibley | 1837–1839 | New York | Whig | 1796–1852 |
| Solomon Sibley | 1820–1823 | Michigan | None | 1769–1846 |
| Carlton R. Sickles | 1963–1967 | Maryland | Democratic | 1921–2004 |
| Daniel Sickles | 1857–1861 1893–1895 | New York | Democratic | 1819–1914 |
| Nicholas Sickles | 1835–1837 | New York | Democratic | 1801–1845 |
| Isaac Siegel | 1915–1923 | New York | Republican | 1880–1947 |
| Alfred Dennis Sieminski | 1951–1959 | New Jersey | Democratic | 1911–1990 |
| Bob Sikes | 1941–1944 1945–1979 | Florida | Democratic | 1906–1994 |
| Gerry Sikorski | 1983–1993 | Minnesota | Democratic-Farmer-Labor | 1948–present |
| Eugene Siler | 1955–1965 | Kentucky | Republican | 1900–1987 |
| Mark D. Siljander | 1981–1987 | Michigan | Republican | 1951–present |
| Thomas Hale Sill | 1826–1827 1829–1831 | Pennsylvania | National Republican | 1783–1856 |
| Nathaniel Silsbee | 1817–1821 | Massachusetts | Democratic-Republican | 1773–1850 |
| Peter Silvester | 1789–1793 | New York | Pro-Administration | 1734–1808 |
| Peter H. Silvester | 1847–1851 | New York | Whig | 1807–1882 |
| Eldred Simkins | 1818–1821 | South Carolina | Democratic-Republican | 1779–1831 |
| F. M. Simmons | 1887–1889 | North Carolina | Democratic | 1854–1940 |
| George A. Simmons | 1853–1857 | New York | Whig | 1791–1857 |
| James S. Simmons | 1909–1913 | New York | Republican | 1861–1935 |
| Rob Simmons | 2001–2007 | Connecticut | Republican | 1943–present |
| Robert G. Simmons | 1923–1933 | Nebraska | Republican | 1891–1969 |
| Albert G. Simms | 1929–1931 | New Mexico | Republican | 1882–1964 |
| William E. Simms | 1859–1861 | Kentucky | Democratic | 1822–1898 |
| Paul Simon | 1975–1985 | Illinois | Democratic | 1928–2003 |
| William E. Simonds | 1889–1891 | Connecticut | Republican | 1842–1903 |
| Samuel Simons | 1843–1845 | Connecticut | Democratic | 1792–1847 |
| Charles B. Simonton | 1879–1883 | Tennessee | Democratic | 1838–1911 |
| William Simonton | 1839–1843 | Pennsylvania | Whig | 1788–1846 |
| John Simpkins | 1895–1898 | Massachusetts | Republican | 1862–1898 |
| Edna O. Simpson | 1959–1961 | Illinois | Republican | 1891–1984 |
| James Simpson Jr. | 1933–1935 | Illinois | Republican | 1905–1960 |
| Jerry Simpson | 1891–1895 1897–1899 | Kansas | Populist | 1842–1905 |
| Kenneth F. Simpson | 1941 | New York | Republican | 1895–1941 |
| Richard F. Simpson | 1843–1849 | South Carolina | Democratic | 1798–1882 |
| Richard M. Simpson | 1937–1960 | Pennsylvania | Republican | 1900–1960 |
| Sid Simpson | 1943–1958 | Illinois | Republican | 1894–1958 |
| Alexander D. Sims | 1845–1848 | South Carolina | Democratic | 1803–1848 |
| Hugo S. Sims Jr. | 1949–1951 | South Carolina | Democratic | 1921–2004 |
| Leonard H. Sims | 1845–1847 | Missouri | Democratic | 1807–1886 |
| Thetus W. Sims | 1897–1921 | Tennessee | Democratic | 1852–1939 |
| James H. Sinclair | 1919–1935 | North Dakota | Republican | 1871–1943 |
| Kyrsten Sinema | 2013–2019 | Arizona | Democratic | 1976–present |
| Theodore Frelinghuysen Singiser | 1883–1885 | Idaho | Republican | 1845–1907 |
| James W. Singleton | 1879–1883 | Illinois | Democratic | 1811–1892 |
| Otho R. Singleton | 1853–1855 1857–1861 1875–1887 | Mississippi | Democratic | 1814–1889 |
| Thomas D. Singleton | 1833 | South Carolina | Nullifier | ????-1833 |
| Clement Hall Sinnickson | 1875–1879 | New Jersey | Republican | 1834–1919 |
| Thomas Sinnickson | 1789–1791 | New Jersey | Pro-Administration | 1744–1817 |
| Thomas Sinnickson | 1797–1799 | New Jersey | Federalist | 1744–1817 |
| Thomas Sinnickson | 1828–1829 | New Jersey | National Republican | 1786–1873 |
| Nicholas J. Sinnott | 1913–1928 | Oregon | Republican | 1870–1929 |
| William A. Sipe | 1892–1895 | Pennsylvania | Democratic | 1844–1935 |
| Albio Sires | 2006–2023 | New Jersey | Democratic | 1951–present |
| William I. Sirovich | 1927–1939 | New York | Democratic | 1882–1939 |
| Norman Sisisky | 1983–2001 | Virginia | Democratic | 1927–2001 |
| B. F. Sisk | 1955–1979 | California | Democratic | 1910–1995 |
| Fred Sisson | 1933–1937 | New York | Democratic | 1879–1949 |
| Thomas U. Sisson | 1909–1923 | Mississippi | Democratic | 1869–1923 |
| Frank C. Sites | 1923–1925 | Pennsylvania | Democratic | 1864–1935 |
| Charles Sitgreaves | 1865–1869 | New Jersey | Democratic | 1803–1878 |
| Samuel Sitgreaves | 1795–1798 | Pennsylvania | Federalist | 1764–1827 |
| Edward L. Sittler Jr. | 1951–1953 | Pennsylvania | Republican | 1908–1978 |
| David Skaggs | 1987–1999 | Colorado | Democratic | 1943–present |
| Joe Skeen | 1981–2003 | New Mexico | Republican | 1927–2003 |
| Charles Skelton | 1851–1855 | New Jersey | Democratic | 1806–1879 |
| Ike Skelton | 1977–2011 | Missouri | Democratic | 1931–2013 |
| William W. Skiles | 1901–1904 | Ohio | Republican | 1849–1904 |
| Charles R. Skinner | 1881–1885 | New York | Republican | 1844–1928 |
| Harry Skinner | 1895–1899 | North Carolina | Populist | 1855–1929 |
| Richard Skinner | 1813–1815 | Vermont | Democratic-Republican | 1778–1833 |
| Thomas Gregory Skinner | 1883–1887 1889–1891 | North Carolina | Democratic | 1842–1907 |
| Thomson J. Skinner | 1797–1799 1803–1804 | Massachusetts | Democratic-Republican | 1752–1809 |
| Joe Skubitz | 1963–1978 | Kansas | Republican | 1906–2000 |
| John M. Slack Jr. | 1959–1980 | West Virginia | Democratic | 1915–1980 |
| Charles Slade | 1833–1834 | Illinois | Democratic | c. 1797–1834 |
| William Slade | 1831–1837 | Vermont | Anti-Masonic | 1786–1859 |
| William Slade | 1837–1843 | Vermont | Whig | 1786–1859 |
| James H. Slater | 1871–1873 | Oregon | Democratic | 1826–1899 |
| Jim Slattery | 1983–1995 | Kansas | Democratic | 1948–present |
| D. French Slaughter Jr. | 1985–1991 | Virginia | Republican | 1925–1998 |
| Louise Slaughter | 1987–2018 | New York | Democratic | 1929–2018 |
| Roger C. Slaughter | 1943–1947 | Missouri | Democratic | 1905–1974 |
| James Luther Slayden | 1897–1919 | Texas | Democratic | 1853–1924 |
| Amos Slaymaker | 1814–1815 | Pennsylvania | Federalist | 1755–1837 |
| William F. Slemons | 1875–1881 | Arkansas | Democratic | 1830–1918 |
| C. Bascom Slemp | 1907–1923 | Virginia | Republican | 1870–1943 |
| Campbell Slemp | 1903–1907 | Virginia | Republican | 1839–1907 |
| John Slidell | 1843–1845 | Louisiana | Democratic | 1793–1871 |
| John I. Slingerland | 1847–1849 | New York | Whig | 1804–1861 |
| A. Scott Sloan | 1861–1863 | Wisconsin | Republican | 1820–1895 |
| Andrew Sloan | 1874–1875 | Georgia | Republican | 1845–1883 |
| Charles H. Sloan | 1911–1919 1929–1931 | Nebraska | Republican | 1863–1946 |
| Ithamar Sloan | 1863–1867 | Wisconsin | Republican | 1822–1898 |
| James Sloan | 1803–1809 | New Jersey | Democratic-Republican | ????-1811 |
| John Sloane | 1819–1823 | Ohio | Democratic-Republican | 1779–1856 |
| John Sloane | 1823–1829 | Ohio | National Republican | 1779–1856 |
| Jonathan Sloane | 1833–1837 | Ohio | Anti-Masonic | 1785–1854 |
| Henry Warner Slocum | 1869–1873 1883–1885 | New York | Democratic | 1827–1894 |
| Jesse Slocumb | 1817–1820 | North Carolina | Federalist | 1780–1820 |
| Joseph Humphrey Sloss | 1871–1875 | Alabama | Democratic | 1826–1911 |
| Elissa Slotkin | 2019–2025 | Michigan | Democratic | 1976–present |
| Frank Small Jr. | 1953–1955 | Maryland | Republican | 1896–1973 |
| John Humphrey Small | 1899–1921 | North Carolina | Democratic | 1858–1946 |
| William B. Small | 1873–1875 | New Hampshire | Republican | 1817–1878 |
| Robert Smalls | 1875–1879 1882–1883 1884–1887 | South Carolina | Republican | 1839–1915 |
| Ephraim K. Smart | 1847–1849 1851–1853 | Maine | Democratic | 1813–1872 |
| James S. Smart | 1873–1875 | New York | Republican | 1842–1903 |
| George Smathers | 1947–1951 | Florida | Democratic | 1913–2007 |
| Dennis Smelt | 1806–1811 | Georgia | Democratic-Republican | 1763–1818 |
| John Smilie | 1799–1812 | Pennsylvania | Anti-Administration | 1741–1812 |
| A. Herr Smith | 1873–1885 | Pennsylvania | Republican | 1815–1894 |
| Addison T. Smith | 1913–1933 | Idaho | Republican | 1862–1956 |
| Albert Smith | 1839–1841 | Maine | Democratic | 1793–1867 |
| Albert Smith | 1843–1847 | New York | Whig | 1805–1870 |
| Albert L. Smith Jr. | 1981–1983 | Alabama | Republican | 1931–1997 |
| Arthur Smith | 1821–1825 | Virginia | Democratic-Republican | 1785–1853 |
| Ballard Smith | 1815–1821 | Virginia | Democratic-Republican | N/A |
| Bernard Smith | 1819–1821 | New Jersey | Democratic-Republican | 1776–1835 |
| Bob Smith | 1985–1990 | New Hampshire | Republican | 1941–present |
| Caleb Blood Smith | 1843–1849 | Indiana | Whig | 1808–1864 |
| Charles Bennett Smith | 1911–1919 | New York | Democratic | 1870–1939 |
| Charles Brooks Smith | 1890–1891 | West Virginia | Republican | 1844–1899 |
| Clyde H. Smith | 1937–1940 | Maine | Republican | 1876–1940 |
| David Highbaugh Smith | 1897–1907 | Kentucky | Democratic | 1854–1928 |
| Denny Smith | 1981–1991 | Oregon | Republican | 1938–present |
| Dietrich C. Smith | 1881–1883 | Illinois | Republican | 1840–1914 |
| Edward H. Smith | 1861–1863 | New York | Democratic | 1809–1885 |
| Francis Ormand Jonathan Smith | 1833–1839 | Maine | Democratic | 1806–1876 |
| Francis R. Smith | 1941–1943 | Pennsylvania | Democratic | 1911–1982 |
| Frank Ellis Smith | 1951–1962 | Mississippi | Democratic | 1918–1997 |
| Frank L. Smith | 1919–1921 | Illinois | Republican | 1867–1950 |
| Frank Owens Smith | 1913–1915 | Maryland | Democratic | 1859–1924 |
| Frederick Cleveland Smith | 1939–1951 | Ohio | Republican | 1884–1956 |
| George Smith | 1809–1813 | Pennsylvania | Democratic-Republican | N/A |
| George J. Smith | 1903–1905 | New York | Republican | 1859–1913 |
| George Luke Smith | 1873–1875 | Louisiana | Republican | 1837–1884 |
| George Ross Smith | 1913–1917 | Minnesota | Republican | 1864–1952 |
| George W. Smith | 1889–1907 | Illinois | Republican | 1846–1907 |
| Gerrit Smith | 1853–1854 | New York | Free Soiler | 1797–1874 |
| Gomer Griffith Smith | 1937–1939 | Oklahoma | Democratic | 1896–1953 |
| Green Clay Smith | 1863–1866 | Kentucky | Unconditional Unionist | 1826–1895 |
| H. Allen Smith | 1957–1973 | California | Republican | 1909–1998 |
| Henry Smith | 1887–1889 | Wisconsin | Laborite | 1838–1916 |
| Henry C. Smith | 1899–1903 | Michigan | Republican | 1856–1911 |
| Henry P. Smith III | 1965–1975 | New York | Republican | 1911–1995 |
| Hezekiah B. Smith | 1879–1881 | New Jersey | Democratic | 1816–1887 |
| Hiram Y. Smith | 1884–1885 | Iowa | Republican | 1843–1894 |
| Horace B. Smith | 1871–1875 | New York | Republican | 1826–1888 |
| Howard W. Smith | 1931–1967 | Virginia | Democratic | 1883–1976 |
| Isaac Smith | 1795–1797 | New Jersey | Federalist | 1740–1807 |
| Isaac Smith | 1813–1815 | Pennsylvania | Democratic-Republican | 1761–1834 |
| Israel Smith | 1791–1795 | Vermont | Anti-Administration | 1759–1810 |
| Israel Smith | 1795–1797 1801–1803 | Vermont | Democratic-Republican | 1759–1810 |
| J. Hyatt Smith | 1881–1883 | New York | Independent | 1824–1886 |
| J. Joseph Smith | 1935–1941 | Connecticut | Democratic | 1904–1980 |
| James Strudwick Smith | 1817–1821 | North Carolina | Democratic-Republican | 1790–1859 |
| James Vernon Smith | 1967–1969 | Oklahoma | Republican | 1926–1973 |
| Jedediah K. Smith | 1807–1809 | New Hampshire | Democratic-Republican | 1770–1828 |
| Jeremiah Smith | 1791–1795 | New Hampshire | Pro-Administration | 1759–1842 |
| Jeremiah Smith | 1795–1797 | New Hampshire | Federalist | 1759–1842 |
| Joe L. Smith | 1929–1945 | West Virginia | Democratic | 1880–1962 |
| John Smith | 1800–1804 | New York | Democratic-Republican | 1752–1816 |
| John Smith | 1801–1815 | Virginia | Democratic-Republican | 1750–1836 |
| John Smith | 1839–1841 | Vermont | Democratic | 1789–1858 |
| John Ambler Smith | 1873–1875 | Virginia | Republican | 1847–1892 |
| John Armstrong Smith | 1869–1873 | Ohio | Republican | 1814–1892 |
| John Cotton Smith | 1800–1806 | Connecticut | Federalist | 1765–1845 |
| John M. C. Smith | 1911–1921 1921–1923 | Michigan | Republican | 1853–1923 |
| John Quincy Smith | 1873–1875 | Ohio | Republican | 1824–1901 |
| John Speed Smith | 1821–1823 | Kentucky | Democratic-Republican | 1792–1854 |
| John T. Smith | 1843–1845 | Pennsylvania | Democratic | 1801–1864 |
| John Walter Smith | 1899–1900 | Maryland | Democratic | 1845–1925 |
| Joseph F. Smith | 1981–1983 | Pennsylvania | Democratic | 1920–1999 |
| Joseph Showalter Smith | 1869–1871 | Oregon | Democratic | 1824–1884 |
| Josiah Smith | 1801–1803 | Massachusetts | Democratic-Republican | 1738–1803 |
| Lamar Smith | 1987–2019 | Texas | Republican | 1947–present |
| Larkin I. Smith | 1989 | Mississippi | Republican | 1944–1989 |
| Lawrence H. Smith | 1941–1958 | Wisconsin | Republican | 1892–1958 |
| Lawrence J. Smith | 1983–1993 | Florida | Democratic | 1941–present |
| Linda Smith | 1995–1999 | Washington | Republican | 1950–present |
| Madison R. Smith | 1907–1909 | Missouri | Democratic | 1850–1919 |
| Marcus A. Smith | 1887–1895 1897–1899 1901–1903 1905–1909 | Arizona | Democratic | 1851–1924 |
| Margaret Chase Smith | 1940–1949 | Maine | Republican | 1897–1995 |
| Martin F. Smith | 1933–1943 | Washington | Democratic | 1891–1954 |
| Nathaniel Smith | 1795–1799 | Connecticut | Federalist | 1762–1822 |
| Neal Smith | 1959–1995 | Iowa | Democratic | 1920–2021 |
| Nick Smith | 1993–2005 | Michigan | Republican | 1934–present |
| O'Brien Smith | 1805–1807 | South Carolina | Democratic-Republican | c. 1756–1811 |
| Oliver H. Smith | 1827–1829 | Indiana | Democratic | 1794–1859 |
| Peter Plympton Smith | 1989–1991 | Vermont | Republican | 1945–present |
| Robert Smith | 1843–1847 | Illinois | Democratic | 1802–1867 |
| Robert Smith | 1847–1849 | Illinois | Independent Democrat | 1802–1867 |
| Robert Smith | 1857–1859 | Illinois | Democratic | 1802–1867 |
| Bob Smith | 1983–1995 1997–1999 | Oregon | Republican | 1931–2020 |
| Samuel Smith | 1793–1795 | Maryland | Anti-Administration | 1752–1839 |
| Samuel Smith | 1795–1803 1816–1822 | Maryland | Democratic-Republican | 1752–1839 |
| Samuel Smith | 1805–1811 | Pennsylvania | Democratic-Republican | N/A |
| Samuel Smith | 1813–1815 | New Hampshire | Federalist | 1765–1842 |
| Samuel A. Smith | 1829–1833 | Pennsylvania | Democratic | 1795–1861 |
| Samuel Axley Smith | 1853–1859 | Tennessee | Democratic | 1822–1863 |
| Samuel W. Smith | 1897–1915 | Michigan | Republican | 1852–1931 |
| Sylvester C. Smith | 1905–1913 | California | Republican | 1858–1913 |
| Thomas Smith | 1815–1817 | Pennsylvania | Federalist | ????-1846 |
| Thomas Smith | 1839–1841 1843–1847 | Indiana | Democratic | 1799–1876 |
| Thomas Alexander Smith | 1905–1907 | Maryland | Democratic | 1850–1932 |
| Thomas Francis Smith | 1917–1921 | New York | Democratic | 1865–1923 |
| Thomas Vernor Smith | 1939–1941 | Illinois | Democratic | 1890–1964 |
| Truman Smith | 1839–1843 1845–1849 | Connecticut | Whig | 1791–1884 |
| Virginia D. Smith | 1975–1991 | Nebraska | Republican | 1911–2006 |
| Walter I. Smith | 1900–1911 | Iowa | Republican | 1862–1922 |
| William Smith | 1789–1791 | Maryland | Anti-Administration | 1728–1814 |
| William Smith | 1797–1799 | South Carolina | Democratic-Republican | 1751–1837 |
| William Smith | 1821–1825 | Virginia | Democratic-Republican | N/A |
| William Smith | 1825–1827 | Virginia | Democratic | N/A |
| William Smith | 1841–1843 1853–1861 | Virginia | Democratic | 1797–1887 |
| William Alden Smith | 1895–1907 | Michigan | Republican | 1859–1932 |
| William Alexander Smith | 1873–1875 | North Carolina | Republican | 1828–1888 |
| William Ephraim Smith | 1875–1881 | Georgia | Democratic | 1829–1890 |
| William Jay Smith | 1869–1871 | Tennessee | Republican | 1823–1913 |
| William Loughton Smith | 1789–1795 | South Carolina | Pro-Administration | 1758–1812 |
| William Loughton Smith | 1795–1797 | South Carolina | Federalist | 1758–1812 |
| William N. H. Smith | 1859–1861 | North Carolina | Oppositionist | 1812–1889 |
| William Orlando Smith | 1903–1907 | Pennsylvania | Republican | 1859–1932 |
| William Robert Smith | 1903–1917 | Texas | Democratic | 1863–1924 |
| William Russell Smith | 1851–1853 | Alabama | Unionist | 1815–1896 |
| William Russell Smith | 1853–1855 | Alabama | Democratic | 1815–1896 |
| William Russell Smith | 1855–1857 | Alabama | American | 1815–1896 |
| William Stephens Smith | 1813–1815 | New York | Federalist | 1755–1816 |
| Wint Smith | 1947–1961 | Kansas | Republican | 1892–1976 |
| Worthington Curtis Smith | 1867–1873 | Vermont | Republican | 1823–1894 |
| Nathaniel B. Smithers | 1863–1865 | Delaware | Unionist | 1818–1896 |
| John H. Smithwick | 1919–1927 | Florida | Democratic | 1872–1948 |
| Martin L. Smyser | 1889–1891 1905–1907 | Ohio | Republican | 1851–1908 |
| Alexander Smyth | 1817–1825 | Virginia | Democratic-Republican | 1765–1830 |
| Alexander Smyth | 1827–1830 | Virginia | Democratic | 1765–1830 |
| George W. Smyth | 1853–1855 | Texas | Democratic | 1803–1866 |
| William Smyth | 1869–1870 | Iowa | Republican | 1824–1870 |
| Henry Snapp | 1871–1873 | Illinois | Republican | 1822–1895 |
| Howard M. Snapp | 1903–1911 | Illinois | Republican | 1855–1938 |
| William Henry Sneed | 1855–1857 | Tennessee | American | 1812–1869 |
| Bertrand Snell | 1915–1939 | New York | Republican | 1870–1958 |
| Samuel Snider | 1889–1891 | Minnesota | Republican | 1845–1928 |
| Charles Edward Snodgrass | 1899–1903 | Tennessee | Democratic | 1866–1936 |
| Henry C. Snodgrass | 1891–1895 | Tennessee | Democratic | 1848–1931 |
| John F. Snodgrass | 1853–1854 | Virginia | Democratic | 1804–1854 |
| John S. Snook | 1901–1905 1917–1919 | Ohio | Democratic | 1862–1952 |
| Horace G. Snover | 1895–1899 | Michigan | Republican | 1847–1924 |
| Donald F. Snow | 1929–1933 | Maine | Republican | 1877–1958 |
| Herman W. Snow | 1891–1893 | Illinois | Democratic | 1836–1914 |
| William W. Snow | 1851–1853 | New York | Democratic | 1812–1886 |
| Vince Snowbarger | 1997–1999 | Kansas | Republican | 1949–present |
| Olympia Snowe | 1979–1995 | Maine | Republican | 1947–present |
| Adam W. Snyder | 1837–1839 | Illinois | Democratic | 1799–1842 |
| Charles P. Snyder | 1883–1889 | West Virginia | Democratic | 1847–1915 |
| Gene Snyder | 1963–1965 1967–1987 | Kentucky | Republican | 1928–2007 |
| Homer P. Snyder | 1915–1925 | New York | Republican | 1863–1937 |
| J. Buell Snyder | 1933–1946 | Pennsylvania | Democratic | 1877–1946 |
| John Snyder | 1841–1843 | Pennsylvania | Democratic | 1793–1850 |
| Melvin C. Snyder | 1947–1949 | West Virginia | Republican | 1898–1972 |
| Oliver P. Snyder | 1871–1875 | Arkansas | Republican | 1833–1882 |
| Vic Snyder | 1997–2011 | Arkansas | Democratic | 1947–present |
| Mike Sodrel | 2005–2007 | Indiana | Republican | 1945–present |
| Stephen Solarz | 1975–1993 | New York | Democratic | 1940–2010 |
| Hilda Solis | 2001–2009 | California | Democratic | 1957–present |
| Augustus Rhodes Sollers | 1841–1843 1853–1855 | Maryland | Whig | 1814–1862 |
| Gerald Solomon | 1979–1999 | New York | Republican | 1930–2001 |
| Andrew Lawrence Somers | 1925–1949 | New York | Democratic | 1895–1949 |
| Peter J. Somers | 1893–1895 | Wisconsin | Democratic | 1850–1924 |
| Daniel E. Somes | 1859–1861 | Maine | Republican | 1815–1888 |
| Paul J. Sorg | 1894–1897 | Ohio | Democratic | 1840–1902 |
| John B. Sosnowski | 1925–1927 | Michigan | Republican | 1883–1968 |
| Mark Souder | 1995–2010 | Indiana | Republican | 1950–2022 |
| Nathan Soule | 1831–1833 | New York | Democratic | 1790–1860 |
| Charles L. South | 1935–1943 | Texas | Democratic | 1892–1965 |
| Robert G. Southall | 1903–1907 | Virginia | Democratic | 1852–1924 |
| Henry Southard | 1801–1811 1815–1821 | New Jersey | Democratic-Republican | 1747–1842 |
| Isaac Southard | 1831–1833 | New Jersey | National Republican | 1783–1850 |
| James H. Southard | 1895–1907 | Ohio | Republican | 1851–1919 |
| Milton I. Southard | 1873–1879 | Ohio | Democratic | 1836–1905 |
| Steve Southerland | 2011–2015 | Florida | Republican | 1965–present |
| William Wright Southgate | 1837–1839 | Kentucky | Whig | 1800–1849 |
| George N. Southwick | 1895–1899 1901–1911 | New York | Republican | 1863–1912 |
| William Henry Sowden | 1885–1889 | Pennsylvania | Democratic | 1840–1907 |
| Zack Space | 2007–2011 | Ohio | Democratic | 1961–present |
| Richard Dobbs Spaight | 1798–1801 | North Carolina | Democratic-Republican | 1758–1802 |
| Richard Dobbs Spaight Jr. | 1823–1825 | North Carolina | Democratic-Republican | 1796–1850 |
| Burleigh F. Spalding | 1899–1901 1903–1905 | North Dakota | Republican | 1853–1934 |
| George Spalding | 1895–1899 | Michigan | Republican | 1836–1915 |
| Rufus P. Spalding | 1863–1869 | Ohio | Republican | 1798–1886 |
| Thomas Spalding | 1805–1806 | Georgia | Democratic-Republican | 1774–1851 |
| Abigail Spanberger | 2019–2025 | Virginia | Democratic | 1979–present |
| David Spangler | 1833–1837 | Ohio | National Republican | 1796–1856 |
| Jacob Spangler | 1817–1818 | Pennsylvania | Democratic-Republican | 1767–1843 |
| Ross Spano | 2019–2021 | Florida | Republican | 1966–present |
| John Sparkman | 1937–1946 | Alabama | Democratic | 1899–1985 |
| Stephen M. Sparkman | 1895–1917 | Florida | Democratic | 1849–1929 |
| Charles I. Sparks | 1929–1933 | Kansas | Republican | 1872–1937 |
| William A. J. Sparks | 1875–1883 | Illinois | Democratic | 1828–1904 |
| Elbridge G. Spaulding | 1849–1851 1859–1863 | New York | Republican | 1809–1897 |
| Oliver L. Spaulding | 1881–1883 | Michigan | Republican | 1833–1922 |
| John C. Speaks | 1921–1931 | Ohio | Republican | 1859–1945 |
| James Z. Spearing | 1924–1931 | Louisiana | Democratic | 1864–1942 |
| Thomas Speed | 1817–1819 | Kentucky | Democratic-Republican | 1768–1842 |
| Emory Speer | 1879–1883 | Georgia | Independent Democrat | 1848–1918 |
| Peter Moore Speer | 1911–1913 | Pennsylvania | Republican | 1862–1933 |
| R. Milton Speer | 1871–1875 | Pennsylvania | Democratic | 1838–1890 |
| Thomas J. Speer | 1871–1872 | Georgia | Republican | 1837–1872 |
| Jackie Speier | 2008–2023 | California | Democratic | 1950–present |
| Jesse Speight | 1829–1837 | North Carolina | Democratic | 1795–1847 |
| Gladys Spellman | 1975–1981 | Maryland | Democratic | 1918–1988 |
| Brent Spence | 1931–1963 | Kentucky | Democratic | 1874–1967 |
| Floyd Spence | 1971–2001 | South Carolina | Republican | 1928–2001 |
| John S. Spence | 1823–1825 | Maryland | Democratic-Republican | 1788–1840 |
| John S. Spence | 1831–1833 | Maryland | National Republican | 1788–1840 |
| Thomas A. Spence | 1843–1845 | Maryland | Whig | 1810–1877 |
| Ambrose Spencer | 1829–1831 | New York | National Republican | 1765–1848 |
| Elijah Spencer | 1821–1823 | New York | Democratic-Republican | 1775–1852 |
| James B. Spencer | 1837–1839 | New York | Democratic | 1781–1848 |
| James G. Spencer | 1895–1897 | Mississippi | Democratic | 1844–1926 |
| John Canfield Spencer | 1817–1819 | New York | Democratic-Republican | 1788–1855 |
| Richard Spencer | 1829–1831 | Maryland | Democratic | 1796–1868 |
| William B. Spencer | 1876–1877 | Louisiana | Democratic | 1835–1882 |
| Lewis Sperry | 1891–1895 | Connecticut | Democratic | 1848–1922 |
| Nehemiah D. Sperry | 1895–1911 | Connecticut | Republican | 1827–1911 |
| Thomas Spight | 1898–1911 | Mississippi | Democratic | 1841–1924 |
| Cyrus Spink | 1859 | Ohio | Republican | 1793–1859 |
| Solomon L. Spink | 1869–1871 | Dakota | Republican | 1831–1881 |
| Francis E. Spinner | 1855–1861 | New York | Democratic | 1802–1890 |
| Francis B. Spinola | 1887–1891 | New York | Democratic | 1821–1891 |
| Henry J. Spooner | 1881–1891 | Rhode Island | Republican | 1839–1918 |
| Charles F. Sprague | 1897–1901 | Massachusetts | Republican | 1857–1902 |
| Peleg Sprague | 1797–1799 | New Hampshire | Federalist | 1756–1800 |
| Peleg Sprague | 1825–1829 | Maine | National Republican | 1793–1880 |
| William Sprague III | 1835–1837 | Rhode Island | Whig | 1799–1856 |
| William Sprague | 1849–1851 | Michigan | Whig | 1809–1868 |
| William P. Sprague | 1871–1875 | Ohio | Republican | 1827–1899 |
| John Spratt | 1983–2011 | South Carolina | Democratic | 1942–2024 |
| James Sprigg | 1841–1843 | Kentucky | Whig | 1802–1852 |
| Michael Sprigg | 1827–1831 | Maryland | Democratic | 1791–1845 |
| Richard Sprigg Jr. | 1796–1799 1801–1802 | Maryland | Democratic-Republican | c. 1769–1806 |
| Thomas Sprigg | 1793–1795 | Maryland | Anti-Administration | 1747–1809 |
| Thomas Sprigg | 1795–1797 | Maryland | Democratic-Republican | 1747–1809 |
| John T. Spriggs | 1883–1887 | New York | Democratic | 1825–1888 |
| Raymond S. Springer | 1939–1947 | Indiana | Republican | 1882–1947 |
| William L. Springer | 1951–1973 | Illinois | Republican | 1909–1992 |
| William McKendree Springer | 1875–1895 | Illinois | Democratic | 1836–1903 |
| Elliott W. Sproul | 1921–1931 | Illinois | Republican | 1856–1935 |
| William H. Sproul | 1923–1931 | Kansas | Republican | 1867–1932 |
| Katharine St. George | 1947–1965 | New York | Republican | 1894–1983 |
| Fernand St Germain | 1961–1989 | Rhode Island | Democratic | 1928–2014 |
| Charles St. John | 1871–1875 | New York | Republican | 1818–1891 |
| Daniel B. St. John | 1847–1849 | New York | Whig | 1808–1890 |
| Henry St. John | 1843–1847 | Ohio | Democratic | 1783–1869 |
| Louis St. Martin | 1851–1853 1885–1887 | Louisiana | Democratic | 1820–1893 |
| William St. Onge | 1963–1970 | Connecticut | Democratic | 1914–1970 |
| Debbie Stabenow | 1997–2001 | Michigan | Democratic | 1950–present |
| Edmund J. Stack | 1911–1913 | Illinois | Democratic | 1874–1957 |
| Edward J. Stack | 1979–1981 | Florida | Democratic | 1910–1989 |
| Michael J. Stack | 1935–1939 | Pennsylvania | Democratic | 1888–1960 |
| Eli T. Stackhouse | 1891–1892 | South Carolina | Democratic | 1824–1892 |
| Neil Staebler | 1963–1965 | Michigan | Democratic | 1905–2000 |
| Robert Stafford | 1961–1971 | Vermont | Republican | 1913–2006 |
| William H. Stafford | 1903–1911 1913–1919 1921–1923 1929–1933 | Wisconsin | Republican | 1869–1957 |
| Harley Orrin Staggers | 1949–1981 | West Virginia | Democratic | 1907–1991 |
| Harley O. Staggers Jr. | 1983–1993 | West Virginia | Democratic | 1951–present |
| James Alonzo Stahle | 1895–1897 | Pennsylvania | Republican | 1829–1912 |
| William G. Stahlnecker | 1885–1893 | New York | Democratic | 1849–1902 |
| Lynn E. Stalbaum | 1965–1967 | Wisconsin | Democratic | 1920–1999 |
| Gale H. Stalker | 1923–1935 | New York | Republican | 1889–1985 |
| Jesse F. Stallings | 1893–1901 | Alabama | Democratic | 1856–1928 |
| Richard H. Stallings | 1985–1993 | Idaho | Democratic | 1940–present |
| James A. Stallworth | 1857–1861 | Alabama | Democratic | 1822–1861 |
| Edwin O. Stanard | 1873–1875 | Missouri | Republican | 1832–1914 |
| William Stanbery | 1827–1833 | Ohio | National Republican | 1788–1873 |
| James Israel Standifer | 1823–1825 | Tennessee | Democratic-Republican | 1779–1837 |
| James Israel Standifer | 1829–1835 | Tennessee | Democratic | 1779–1837 |
| James Israel Standifer | 1835–1837 | Tennessee | National Republican | 1779–1837 |
| James Israel Standifer | 1837 | Tennessee | Whig | 1779–1837 |
| Elisha Standiford | 1873–1875 | Kentucky | Democratic | 1831–1887 |
| Richard Stanford | 1797–1816 | North Carolina | Democratic-Republican | 1767–1816 |
| Arlan Stangeland | 1977–1991 | Minnesota | Republican | 1930–2013 |
| Augustus Owsley Stanley | 1903–1915 | Kentucky | Democratic | 1867–1958 |
| Thomas B. Stanley | 1946–1953 | Virginia | Democratic | 1890–1970 |
| Winifred C. Stanley | 1943–1945 | New York | Republican | 1909–1996 |
| Edward Stanly | 1837–1843 1849–1853 | North Carolina | Whig | 1810–1872 |
| John Stanly | 1801–1803 1809–1811 | North Carolina | Federalist | 1774–1834 |
| Benjamin Stanton | 1851–1853 | Ohio | Whig | 1809–1872 |
| Benjamin Stanton | 1855–1861 | Ohio | Republican | 1809–1872 |
| Frederick Perry Stanton | 1845–1855 | Tennessee | Democratic | 1814–1894 |
| J. William Stanton | 1965–1983 | Ohio | Republican | 1924–2002 |
| James V. Stanton | 1971–1977 | Ohio | Democratic | 1932–2022 |
| Joseph Stanton Jr. | 1801–1807 | Rhode Island | Democratic-Republican | 1739–1807 |
| Richard H. Stanton | 1849–1855 | Kentucky | Democratic | 1812–1891 |
| William Henry Stanton | 1876–1877 | Pennsylvania | Democratic | 1843–1900 |
| John H. Starin | 1877–1881 | New York | Republican | 1825–1909 |
| Pete Stark | 1973–2013 | California | Democratic | 1931–2020 |
| William L. Stark | 1897–1903 | Nebraska | Populist | 1853–1922 |
| Frank Starkey | 1945–1947 | Minnesota | Democratic-Farmer-Labor | 1892–1968 |
| David A. Starkweather | 1839–1841 1845–1847 | Ohio | Democratic | 1802–1876 |
| George Anson Starkweather | 1847–1849 | New York | Democratic | 1794–1879 |
| Henry H. Starkweather | 1867–1876 | Connecticut | Republican | 1826–1876 |
| Joe Starnes | 1935–1945 | Alabama | Democratic | 1895–1962 |
| John F. Starr | 1863–1867 | New Jersey | Republican | 1818–1904 |
| Mick Staton | 1981–1983 | West Virginia | Republican | 1940–2014 |
| S. Walter Stauffer | 1953–1955 1957–1959 | Pennsylvania | Republican | 1888–1975 |
| Henry B. Steagall | 1915–1943 | Alabama | Democratic | 1873–1943 |
| Asahel Stearns | 1815–1817 | Massachusetts | Federalist | 1774–1839 |
| Cliff Stearns | 1989–2013 | Florida | Republican | 1941–present |
| Foster W. Stearns | 1939–1945 | New Hampshire | Republican | 1881–1956 |
| Henry G. Stebbins | 1863–1864 | New York | Democratic | 1811–1881 |
| Charles Manly Stedman | 1911–1930 | North Carolina | Democratic | 1841–1930 |
| William Stedman | 1803–1810 | Massachusetts | Federalist | 1765–1831 |
| Tom Steed | 1949–1981 | Oklahoma | Democratic | 1904–1983 |
| Michelle Steel | 2021–2025 | California | Republican | 1955–present |
| George Washington Steele | 1881–1889 1895–1903 | Indiana | Republican | 1839–1922 |
| Henry J. Steele | 1915–1921 | Pennsylvania | Democratic | 1860–1933 |
| John Steele | 1790–1793 | North Carolina | Pro-Administration | 1764–1815 |
| John B. Steele | 1861–1865 | New York | Democratic | 1814–1866 |
| John N. Steele | 1834–1837 | Maryland | National Republican | 1796–1853 |
| Leslie J. Steele | 1927–1929 | Georgia | Democratic | 1868–1929 |
| Robert H. Steele | 1970–1975 | Connecticut | Republican | 1938–present |
| Thomas J. Steele | 1915–1917 | Iowa | Democratic | 1853–1920 |
| Walter Leak Steele | 1877–1881 | North Carolina | Democratic | 1823–1891 |
| William G. Steele | 1861–1865 | New Jersey | Democratic | 1820–1892 |
| William R. Steele | 1873–1877 | Wyoming | Democratic | 1842–1901 |
| Alan Steelman | 1973–1977 | Texas | Republican | 1942–present |
| Halvor Steenerson | 1903–1923 | Minnesota | Republican | 1852–1926 |
| Lewis Steenrod | 1839–1845 | Virginia | Democratic | 1810–1862 |
| Newton Steers | 1977–1979 | Maryland | Republican | 1917–1993 |
| Karl Stefan | 1935–1951 | Nebraska | Republican | 1884–1951 |
| Sam Steiger | 1967–1977 | Arizona | Republican | 1929–2012 |
| William A. Steiger | 1967–1978 | Wisconsin | Republican | 1938–1978 |
| William Stenger | 1875–1879 | Pennsylvania | Democratic | 1840–1918 |
| Charles I. Stengle | 1923–1925 | New York | Democratic | 1869–1953 |
| Charles Stenholm | 1979–2005 | Texas | Democratic | 1938–2023 |
| Ambrose E. B. Stephens | 1919–1927 | Ohio | Republican | 1862–1927 |
| Abraham P. Stephens | 1851–1853 | New York | Democratic | 1796–1859 |
| Alexander H. Stephens | 1843–1851 | Georgia | Whig | 1812–1883 |
| Alexander H. Stephens | 1851–1853 | Georgia | Unionist | 1812–1883 |
| Alexander H. Stephens | 1853–1855 | Georgia | Whig | 1812–1883 |
| Alexander H. Stephens | 1855–1859 1873–1882 | Georgia | Democratic | 1812–1883 |
| Dan V. Stephens | 1911–1919 | Nebraska | Democratic | 1868–1939 |
| Hubert D. Stephens | 1911–1921 | Mississippi | Democratic | 1875–1946 |
| John H. Stephens | 1897–1917 | Texas | Democratic | 1847–1924 |
| Philander Stephens | 1829–1833 | Pennsylvania | Democratic | 1788–1842 |
| Robert Grier Stephens Jr. | 1961–1977 | Georgia | Democratic | 1913–2003 |
| William Stephens | 1911–1913 | California | Republican | 1859–1944 |
| William Stephens | 1913–1916 | California | Progressive | 1859–1944 |
| Benjamin Stephenson | 1814–1817 | Illinois | None | 1769–1822 |
| Isaac Stephenson | 1883–1889 | Wisconsin | Republican | 1829–1918 |
| James Stephenson | 1803–1805 1809–1811 1822–1825 | Virginia | Federalist | 1764–1833 |
| Samuel M. Stephenson | 1889–1897 | Michigan | Republican | 1831–1907 |
| Samuel Sterett | 1791–1793 | Maryland | Anti-Administration | 1758–1833 |
| John B. Sterigere | 1827–1831 | Pennsylvania | Democratic | 1793–1852 |
| Ansel Sterling | 1821–1825 | Connecticut | Democratic-Republican | 1782–1853 |
| Bruce F. Sterling | 1917–1919 | Pennsylvania | Democratic | 1870–1945 |
| John A. Sterling | 1903–1913 1915–1918 | Illinois | Republican | 1857–1918 |
| Micah Sterling | 1821–1823 | New York | Federalist | 1784–1844 |
| Charles Stetson | 1849–1851 | Maine | Democratic | 1801–1863 |
| Lemuel Stetson | 1843–1845 | New York | Democratic | 1804–1868 |
| Aaron Fletcher Stevens | 1867–1871 | New Hampshire | Republican | 1819–1887 |
| Bradford N. Stevens | 1871–1873 | Illinois | Democratic | 1813–1885 |
| Charles A. Stevens | 1875 | Massachusetts | Republican | 1816–1892 |
| Frederick Stevens | 1897–1915 | Minnesota | Republican | 1861–1923 |
| Hestor L. Stevens | 1853–1855 | Michigan | Democratic | 1803–1864 |
| Hiram S. Stevens | 1875–1879 | Arizona | Democratic | 1832–1893 |
| Isaac Stevens | 1857–1861 | Washington | Democratic | 1818–1862 |
| James Stevens | 1819–1821 | Connecticut | Democratic-Republican | 1768–1835 |
| Moses T. Stevens | 1891–1895 | Massachusetts | Democratic | 1825–1907 |
| Raymond B. Stevens | 1913–1915 | New Hampshire | Democratic | 1874–1942 |
| Robert S. Stevens | 1883–1885 | New York | Democratic | 1824–1893 |
| Thaddeus Stevens | 1849–1853 | Pennsylvania | Whig | 1792–1868 |
| Thaddeus Stevens | 1859–1868 | Pennsylvania | Republican | 1792–1868 |
| Adlai Stevenson I | 1875–1877 1879–1881 | Illinois | Democratic | 1835–1914 |
| Andrew Stevenson | 1821–1825 | Virginia | Democratic-Republican | 1784–1857 |
| Andrew Stevenson | 1825–1834 | Virginia | Democratic | 1784–1857 |
| James S. Stevenson | 1825–1829 | Pennsylvania | Democratic | 1780–1831 |
| Job E. Stevenson | 1869–1873 | Ohio | Republican | 1832–1922 |
| John W. Stevenson | 1857–1861 | Kentucky | Democratic | 1812–1886 |
| William Francis Stevenson | 1917–1933 | South Carolina | Democratic | 1861–1942 |
| William H. Stevenson | 1941–1949 | Wisconsin | Republican | 1891–1978 |
| Lewis Steward | 1891–1893 | Illinois | Democratic | 1824–1896 |
| Alexander Stewart | 1895–1901 | Wisconsin | Republican | 1829–1912 |
| Andrew Stewart | 1821–1823 | Pennsylvania | Democratic-Republican | 1791–1872 |
| Andrew Stewart | 1823–1829 | Pennsylvania | Anti-Masonic | 1791–1872 |
| Andrew Stewart | 1831–1833 | Pennsylvania | Democratic-Republican | 1791–1872 |
| Andrew Stewart | 1833–1835 | Pennsylvania | Whig | 1791–1872 |
| Andrew Stewart | 1843–1849 | Pennsylvania | Whig | 1791–1872 |
| Andrew Stewart | 1891–1892 | Pennsylvania | Republican | 1836–1903 |
| Bennett Stewart | 1979–1981 | Illinois | Democratic | 1912–1988 |
| Charles Stewart | 1883–1893 | Texas | Democratic | 1836–1895 |
| Chris Stewart | 2013–2023 | Utah | Republican | 1960–present |
| J. George Stewart | 1935–1937 | Delaware | Republican | 1890–1970 |
| Jacob H. Stewart | 1877–1879 | Minnesota | Republican | 1829–1884 |
| James Stewart | 1818–1819 | North Carolina | Federalist | 1775–1821 |
| James Augustus Stewart | 1855–1861 | Maryland | Democratic | 1808–1879 |
| James F. Stewart | 1895–1903 | New Jersey | Republican | 1851–1904 |
| John Stewart | 1803–1805 | Pennsylvania | Democratic-Republican | 17??–1820 |
| John Stewart | 1843–1845 | Connecticut | Democratic | 1795–1860 |
| John D. Stewart | 1887–1891 | Georgia | Democratic | 1833–1894 |
| John Knox Stewart | 1899–1903 | New York | Republican | 1853–1919 |
| John Wolcott Stewart | 1883–1891 | Vermont | Republican | 1825–1915 |
| Paul Stewart | 1943–1947 | Oklahoma | Democratic | 1892–1950 |
| Percy Hamilton Stewart | 1931–1933 | New Jersey | Democratic | 1867–1951 |
| Thomas E. Stewart | 1867–1869 | New York | Republican | 1824–1904 |
| William Stewart | 1857–1861 | Pennsylvania | Republican | 1810–1876 |
| William G. Stigler | 1944–1952 | Oklahoma | Democratic | 1891–1952 |
| John D. Stiles | 1862–1865 1869–1871 | Pennsylvania | Democratic | 1822–1896 |
| William H. Stiles | 1843–1845 | Georgia | Democratic | 1808–1865 |
| Thomas N. Stilwell | 1865–1867 | Indiana | Republican | 1830–1874 |
| Walter R. Stiness | 1915–1923 | Rhode Island | Republican | 1854–1924 |
| K. William Stinson | 1963–1965 | Washington | Republican | 1930–2002 |
| Moses D. Stivers | 1889–1891 | New York | Republican | 1828–1895 |
| Steve Stivers | 2011–2021 | Ohio | Republican | 1965–present |
| George R. Stobbs | 1925–1931 | Massachusetts | Republican | 1877–1966 |
| Henry Stockbridge Jr. | 1889–1891 | Maryland | Republican | 1856–1924 |
| T. R. Stockdale | 1887–1895 | Mississippi | Democratic | 1828–1899 |
| David Stockman | 1977–1981 | Michigan | Republican | 1946–present |
| Lowell Stockman | 1943–1953 | Oregon | Republican | 1901–1962 |
| Steve Stockman | 1995–1997 2013–2015 | Texas | Republican | 1956–present |
| Strother M. Stockslager | 1881–1885 | Indiana | Democratic | 1842–1930 |
| Richard Stockton | 1813–1815 | New Jersey | Federalist | 1764–1828 |
| Ebenezer Stoddard | 1821–1825 | Connecticut | Democratic-Republican | 1785–1847 |
| John Truman Stoddert | 1833–1835 | Maryland | Democratic | 1790–1870 |
| Samuel Stokely | 1841–1843 | Ohio | Whig | 1796–1861 |
| Edward L. Stokes | 1931–1935 | Pennsylvania | Republican | 1880–1964 |
| J. William Stokes | 1895–1896 1896–1901 | South Carolina | Democratic | 1853–1901 |
| Louis Stokes | 1969–1999 | Ohio | Democratic | 1925–2015 |
| William Brickly Stokes | 1859–1861 | Tennessee | Oppositionist | 1814–1897 |
| William Brickly Stokes | 1866–1871 | Tennessee | Republican | 1814–1897 |
| Philip H. Stoll | 1919–1923 | South Carolina | Democratic | 1874–1958 |
| Alfred P. Stone | 1844–1845 | Ohio | Democratic | 1813–1865 |
| Charles W. Stone | 1890–1899 | Pennsylvania | Republican | 1843–1912 |
| Claude U. Stone | 1911–1917 | Illinois | Democratic | 1879–1957 |
| David Stone | 1799–1801 | North Carolina | Democratic-Republican | 1770–1818 |
| Eben F. Stone | 1881–1887 | Massachusetts | Republican | 1822–1895 |
| Frederick Stone | 1867–1871 | Maryland | Democratic | 1820–1899 |
| James W. Stone | 1843–1845 1851–1853 | Kentucky | Democratic | 1813–1854 |
| John W. Stone | 1877–1881 | Michigan | Republican | 1838–1922 |
| Joseph Champlin Stone | 1877–1879 | Iowa | Republican | 1829–1902 |
| Michael Jenifer Stone | 1789–1791 | Maryland | Anti-Administration | 1747–1812 |
| Ulysses S. Stone | 1929–1931 | Oklahoma | Republican | 1878–1962 |
| William Stone | 1837–1839 | Tennessee | Whig | 1791–1853 |
| William A. Stone | 1891–1898 | Pennsylvania | Republican | 1846–1920 |
| William Henry Stone | 1873–1877 | Missouri | Democratic | 1828–1901 |
| William J. Stone | 1885–1891 | Missouri | Democratic | 1848–1918 |
| William Johnson Stone | 1885–1895 | Kentucky | Democratic | 1841–1923 |
| Bellamy Storer | 1835–1837 | Ohio | National Republican | 1796–1875 |
| Bellamy Storer | 1891–1895 | Ohio | Republican | 1847–1922 |
| Clement Storer | 1807–1809 | New Hampshire | Democratic-Republican | 1760–1830 |
| Frederic Storm | 1901–1903 | New York | Republican | 1844–1935 |
| John B. Storm | 1871–1875 1883–1887 | Pennsylvania | Democratic | 1838–1901 |
| Henry R. Storrs | 1817–1821 1823–1831 | New York | Federalist | 1787–1837 |
| William L. Storrs | 1829–1833 | Connecticut | National Republican | 1795–1861 |
| William L. Storrs | 1839–1840 | Connecticut | Whig | 1795–1861 |
| Joseph Story | 1808–1809 | Massachusetts | Democratic-Republican | 1779–1845 |
| William L. Stoughton | 1869–1873 | Michigan | Republican | 1827–1888 |
| Byron G. Stout | 1891–1893 | Michigan | Democratic | 1829–1896 |
| Lansing Stout | 1859–1861 | Oregon | Democratic | 1828–1871 |
| Tom Stout | 1913–1917 | Montana | Democratic | 1879–1965 |
| John Hubler Stover | 1868–1869 | Missouri | Republican | 1833–1889 |
| Silas Stow | 1811–1813 | New York | Democratic–Republican | 1773–1827 |
| William Henry Harrison Stowell | 1871–1877 | Virginia | Republican | 1840–1922 |
| John G. Stower | 1827–1829 | New York | Democratic | 1791–1850 |
| Peter W. Strader | 1869–1871 | Ohio | Democratic | 1818–1881 |
| Horace B. Strait | 1873–1879 1881–1887 | Minnesota | Republican | 1835–1894 |
| Thomas J. Strait | 1893–1899 | South Carolina | Democratic | 1846–1924 |
| James S. T. Stranahan | 1855–1857 | New York | Whig | 1808–1898 |
| Michael L. Strang | 1985–1987 | Colorado | Republican | 1929–2014 |
| Charles C. Stratton | 1837–1839 1841–1843 | New Jersey | Whig | 1796–1859 |
| John Stratton | 1801–1803 | Virginia | Federalist | 1769–1804 |
| John L. N. Stratton | 1859–1863 | New Jersey | Republican | 1817–1889 |
| Nathan T. Stratton | 1851–1855 | New Jersey | Democratic | 1813–1887 |
| Samuel S. Stratton | 1959–1989 | New York | Democratic | 1916–1990 |
| William Stratton | 1941–1943 1947–1949 | Illinois | Republican | 1914–2001 |
| Christian M. Straub | 1853–1855 | Pennsylvania | Democratic | 1804–???? |
| Isidor Straus | 1894–1895 | New York | Democratic | 1845–1912 |
| James Dale Strawbridge | 1873–1875 | Pennsylvania | Republican | 1824–1890 |
| Randall S. Street | 1819–1821 | New York | Federalist | 1780–1841 |
| Randolph Strickland | 1869–1871 | Michigan | Republican | 1823–1880 |
| Ted Strickland | 1993–1995 1997–2007 | Ohio | Democratic | 1941–present |
| Lawrence B. Stringer | 1913–1915 | Illinois | Democratic | 1866–1942 |
| Douglas R. Stringfellow | 1953–1955 | Utah | Republican | 1922–1966 |
| Jesse B. Strode | 1895–1899 | Nebraska | Republican | 1845–1924 |
| John Strohm | 1845–1849 | Pennsylvania | Whig | 1793–1884 |
| James Strong | 1819–1821 1823–1825 | New York | Federalist | 1783–1847 |
| James Strong | 1825–1831 | New York | National Republican | 1783–1847 |
| James G. Strong | 1919–1933 | Kansas | Republican | 1870–1938 |
| Julius L. Strong | 1869–1872 | Connecticut | Republican | 1828–1872 |
| Luther M. Strong | 1893–1897 | Ohio | Republican | 1838–1903 |
| Nathan L. Strong | 1917–1935 | Pennsylvania | Republican | 1859–1939 |
| Selah B. Strong | 1843–1845 | New York | Democratic | 1792–1872 |
| Solomon Strong | 1815–1819 | Massachusetts | Federalist | 1780–1850 |
| Stephen Strong | 1845–1847 | New York | Democratic | 1791–1866 |
| Sterling P. Strong | 1933–1935 | Texas | Democratic | 1862–1936 |
| Theron R. Strong | 1839–1841 | New York | Democratic | 1802–1873 |
| William Strong | 1811–1815 1819–1821 | Vermont | Democratic-Republican | 1763–1840 |
| William Strong | 1847–1851 | Pennsylvania | Democratic | 1808–1895 |
| George Strother | 1817–1820 | Virginia | Democratic-Republican | 1783–1840 |
| James F. Strother | 1851–1853 | Virginia | Whig | 1811–1860 |
| James F. Strother | 1925–1929 | West Virginia | Republican | 1868–1930 |
| Myer Strouse | 1863–1867 | Pennsylvania | Democratic | 1825–1878 |
| William F. Strowd | 1895–1899 | North Carolina | Populist | 1832–1911 |
| Isaac S. Struble | 1883–1891 | Iowa | Republican | 1843–1913 |
| William Francis Strudwick | 1796–1797 | North Carolina | Federalist | c. 1765–1812 |
| Alexander Hugh Holmes Stuart | 1841–1843 | Virginia | Whig | 1807–1891 |
| Andrew Stuart | 1853–1855 | Ohio | Democratic | 1823–1872 |
| Archibald Stuart | 1837–1839 | Virginia | Democratic | 1795–1855 |
| Charles E. Stuart | 1847–1849 1851–1853 | Michigan | Democratic | 1810–1887 |
| David Stuart | 1853–1855 | Michigan | Democratic | 1816–1868 |
| John T. Stuart | 1839–1843 | Illinois | Whig | 1807–1885 |
| John T. Stuart | 1863–1865 | Illinois | Democratic | 1807–1885 |
| Philip Stuart | 1811–1819 | Maryland | Federalist | 1760–1830 |
| Frank Stubblefield | 1959–1974 | Kentucky | Democratic | 1907–1977 |
| Henry E. Stubbs | 1933–1937 | California | Democratic | 1881–1937 |
| W. S. Stuckey Jr. | 1967–1977 | Georgia | Democratic | 1935–present |
| Gerry Studds | 1973–1997 | Massachusetts | Democratic | 1937–2006 |
| Elmer E. Studley | 1933–1935 | New York | Democratic | 1869–1942 |
| Howard William Stull | 1932–1933 | Pennsylvania | Republican | 1876–1949 |
| Bob Stump | 1977–1981 | Arizona | Democratic | 1927–2003 |
| Bob Stump | 1981–2003 | Arizona | Republican | 1927–2003 |
| Herman Stump | 1889–1893 | Maryland | Democratic | 1837–1917 |
| Bart Stupak | 1993–2011 | Michigan | Democratic | 1952–present |
| Jonathan Sturges | 1789–1793 | Connecticut | Pro-Administration | 1740–1819 |
| Lewis B. Sturges | 1805–1817 | Connecticut | Federalist | 1763–1844 |
| George Cookman Sturgiss | 1907–1911 | West Virginia | Republican | 1842–1925 |
| John C. Sturtevant | 1897–1899 | Pennsylvania | Republican | 1835–1912 |
| Christopher D. Sullivan | 1917–1941 | New York | Democratic | 1870–1942 |
| George Sullivan | 1811–1813 | New Hampshire | Federalist | 1771–1838 |
| John Andrew Sullivan | 1903–1907 | Massachusetts | Democratic | 1868–1927 |
| John B. Sullivan | 1941–1943 1945–1947 1949–1951 | Missouri | Democratic | 1897–1951 |
| John Sullivan | 2002–2013 | Oklahoma | Republican | 1965–present |
| Leonor Sullivan | 1953–1977 | Missouri | Democratic | 1902–1988 |
| Maurice J. Sullivan | 1943–1945 | Nevada | Democratic | 1884–1953 |
| Patrick J. Sullivan | 1929–1933 | Pennsylvania | Republican | 1877–1946 |
| Timothy Sullivan | 1903–1906 1913 | New York | Democratic | 1862–1913 |
| William V. Sullivan | 1897–1898 | Mississippi | Democratic | 1857–1918 |
| Cyrus A. Sulloway | 1895–1913 1915–1917 | New Hampshire | Republican | 1839–1917 |
| Charles A. Sulzer | 1917–1919 1919 | Alaska | Democratic | 1879–1919 |
| William Sulzer | 1895–1912 | New York | Democratic | 1863–1941 |
| George W. Summers | 1841–1845 | Virginia | Whig | 1804–1868 |
| John W. Summers | 1919–1933 | Washington | Republican | 1870–1937 |
| Charles A. Sumner | 1883–1885 | California | Democratic | 1835–1903 |
| Daniel H. Sumner | 1883–1885 | Wisconsin | Democratic | 1837–1903 |
| Jessie Sumner | 1939–1947 | Illinois | Republican | 1898–1994 |
| Hatton W. Sumners | 1913–1947 | Texas | Democratic | 1875–1962 |
| Thomas Sumter | 1789–1793 | South Carolina | Anti-Administration | 1734–1832 |
| Thomas Sumter | 1797–1801 | South Carolina | Democratic-Republican | 1734–1832 |
| Thomas De Lage Sumter | 1839–1843 | South Carolina | Democratic | 1809–1874 |
| Don Sundquist | 1983–1995 | Tennessee | Republican | 1936–2023 |
| Frank Sundstrom | 1943–1949 | New Jersey | Republican | 1901–1980 |
| Fofō Iosefa Fiti Sunia | 1981–1988 | American Samoa | Democratic | 1937–present |
| John E. Sununu | 1997–2003 | New Hampshire | Republican | 1964–present |
| Daniel Sutherland | 1921–1931 | Alaska | Republican | 1869–1955 |
| George Sutherland | 1901–1903 | Utah | Republican | 1862–1942 |
| Howard Sutherland | 1913–1917 | West Virginia | Republican | 1865–1950 |
| Jabez G. Sutherland | 1871–1873 | Michigan | Democratic | 1825–1902 |
| Joel B. Sutherland | 1827–1837 | Pennsylvania | Democratic | 1792–1861 |
| Josiah Sutherland | 1851–1853 | New York | Democratic | 1804–1887 |
| Roderick D. Sutherland | 1897–1901 | Nebraska | Populist | 1862–1915 |
| William H. Sutphin | 1931–1943 | New Jersey | Democratic | 1887–1972 |
| Betty Sutton | 2007–2013 | Ohio | Democratic | 1963–present |
| James Patrick Sutton | 1949–1955 | Tennessee | Democratic | 1915–2005 |
| Samuel Swan | 1821–1825 | New Jersey | Democratic-Republican | 1771–1844 |
| Samuel Swan | 1825–1831 | New Jersey | National Republican | 1771–1844 |
| Fletcher B. Swank | 1921–1929 1931–1935 | Oklahoma | Democratic | 1875–1950 |
| Edward Swann | 1902–1903 | New York | Democratic | 1862–1945 |
| Thomas Swann | 1869–1879 | Maryland | Democratic | 1809–1883 |
| Charles E. Swanson | 1929–1933 | Iowa | Republican | 1879–1970 |
| Claude A. Swanson | 1893–1906 | Virginia | Democratic | 1862–1939 |
| John Swanwick | 1795–1798 | Pennsylvania | Democratic-Republican | 1759–1798 |
| Peter Swart | 1807–1809 | New York | Democratic-Republican | 1752–1829 |
| Joshua W. Swartz | 1925–1927 | Pennsylvania | Republican | 1867–1959 |
| John P. Swasey | 1908–1911 | Maine | Republican | 1839–1928 |
| Henry Swearingen | 1838–1841 | Ohio | Democratic | c. 1792–1849 |
| Lorenzo De Medici Sweat | 1863–1865 | Maine | Democratic | 1818–1898 |
| John E. Sweeney | 1999–2007 | New York | Republican | 1955–present |
| Mac Sweeney | 1985–1989 | Texas | Republican | 1955–present |
| Martin L. Sweeney | 1931–1943 | Ohio | Democratic | 1885–1960 |
| Robert E. Sweeney | 1965–1967 | Ohio | Democratic | 1924–2007 |
| William N. Sweeney | 1869–1871 | Kentucky | Democratic | 1832–1895 |
| George Sweeny | 1839–1843 | Ohio | Democratic | 1796–1877 |
| Burton E. Sweet | 1915–1923 | Iowa | Republican | 1867–1957 |
| Edwin F. Sweet | 1911–1913 | Michigan | Democratic | 1847–1935 |
| John Hyde Sweet | 1940–1941 | Nebraska | Republican | 1880–1964 |
| Thaddeus C. Sweet | 1923–1928 | New York | Republican | 1872–1928 |
| Willis Sweet | 1890–1895 | Idaho | Republican | 1856–1925 |
| Charles Sweetser | 1849–1853 | Ohio | Democratic | 1808–1864 |
| Joseph Henry Sweney | 1889–1891 | Iowa | Republican | 1845–1918 |
| Richard N. Swett | 1991–1995 | New Hampshire | Democratic | 1957–present |
| J. Howard Swick | 1927–1935 | Pennsylvania | Republican | 1879–1952 |
| Al Swift | 1979–1995 | Washington | Democratic | 1935–2018 |
| Benjamin Swift | 1827–1831 | Vermont | National Republican | 1781–1847 |
| Oscar W. Swift | 1915–1919 | New York | Republican | 1869–1940 |
| Zephaniah Swift | 1793–1795 | Connecticut | Pro-Administration | 1759–1823 |
| Zephaniah Swift | 1795–1797 | Connecticut | Federalist | 1759–1823 |
| John Swinburne | 1885–1887 | New York | Republican | 1820–1889 |
| Charles Swindall | 1920–1921 | Oklahoma | Republican | 1876–1939 |
| Pat Swindall | 1985–1989 | Georgia | Republican | 1950–2018 |
| Phil Swing | 1921–1933 | California | Republican | 1884–1963 |
| Robert M. Switzer | 1911–1919 | Ohio | Republican | 1863–1952 |
| Jacob Swoope | 1809–1811 | Virginia | Federalist | 17??–1832 |
| William I. Swoope | 1923–1927 | Pennsylvania | Republican | 1862–1930 |
| Guy J. Swope | 1937–1939 | Pennsylvania | Democratic | 1892–1969 |
| John Augustus Swope | 1884–1885 1885–1887 | Pennsylvania | Democratic | 1827–1910 |
| King Swope | 1919–1921 | Kentucky | Republican | 1893–1961 |
| Samuel F. Swope | 1855–1857 | Kentucky | American | 1809–1865 |
| George Sykes | 1843–1845 1845–1847 | New Jersey | Democratic | 1802–1880 |
| George G. Symes | 1885–1889 | Colorado | Republican | 1840–1893 |
| James W. Symington | 1969–1977 | Missouri | Democratic | 1927–present |
| Steve Symms | 1973–1981 | Idaho | Republican | 1938–2024 |
| Mike Synar | 1979–1995 | Oklahoma | Democratic | 1950–1996 |
| J. Hale Sypher | 1868–1869 1870–1875 | Louisiana | Republican | 1837–1905 |