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

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

## 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 |
| Thomas Banks Cabaniss | 1893–1895 | Georgia | Democratic | 1835–1915 |
| Earle Cabell | 1965–1973 | Texas | Democratic | 1906–1975 |
| Edward C. Cabell | 1845–1846 1847–1853 | Florida | Whig | 1816–1896 |
| George Cabell | 1875–1887 | Virginia | Democratic | 1836–1906 |
| Samuel Jordan Cabell | 1795–1803 | Virginia | Democratic-Republican | 1756–1818 |
| Benjamin T. Cable | 1891–1893 | Illinois | Democratic | 1853–1923 |
| John L. Cable | 1921–1925 1929–1933 | Ohio | Republican | 1884–1971 |
| Joseph Cable | 1849–1853 | Ohio | Democratic | 1801–1880 |
| Cornelius A. Cadmus | 1891–1895 | New Jersey | Democratic | 1844–1902 |
| John Cadwalader | 1855–1857 | Pennsylvania | Democratic | 1805–1879 |
| Lambert Cadwalader | 1789–1791 1793–1795 | New Jersey | Pro-Administration | 1742–1823 |
| Claude E. Cady | 1933–1935 | Michigan | Democratic | 1878–1953 |
| Daniel Cady | 1815–1817 | New York | Federalist | 1773–1859 |
| John W. Cady | 1823–1825 | New York | Democratic-Republican | 1790–1854 |
| Patrick T. Caffery | 1969–1973 | Louisiana | Democratic | 1932–2013 |
| Harry Cage | 1833–1835 | Mississippi | Democratic | 1795–1858 |
| William T. Cahill | 1959–1970 | New Jersey | Republican | 1912–1996 |
| William Cahoon | 1829–1833 | Vermont | Anti-Masonic | 1774–1833 |
| Richard H. Cain | 1873–1875 1877–1879 | South Carolina | Republican | 1825–1887 |
| John Thomas Caine | 1882–1893 | Utah | Democratic | 1829–1911 |
| Henry L. Cake | 1867–1871 | Pennsylvania | Republican | 1827–1899 |
| William M. Calder | 1905–1915 | New York | Republican | 1869–1945 |
| William A. Calderhead | 1895–1897 1899–1911 | Kansas | Republican | 1844–1928 |
| Andrew Jackson Caldwell | 1883–1887 | Tennessee | Democratic | 1837–1906 |
| Ben F. Caldwell | 1899–1905 1907–1909 | Illinois | Democratic | 1848–1924 |
| C. Pope Caldwell | 1915–1921 | New York | Democratic | 1875–1940 |
| George Caldwell | 1843–1845 1849–1851 | Kentucky | Democratic | 1814–1866 |
| Greene W. Caldwell | 1841–1843 | North Carolina | Democratic | 1806–1864 |
| James Caldwell | 1813–1817 | Ohio | Democratic-Republican | 1770–1838 |
| John A. Caldwell | 1889–1894 | Ohio | Republican | 1852–1927 |
| John Henry Caldwell | 1873–1877 | Alabama | Democratic | 1826–1902 |
| John W. Caldwell | 1877–1883 | Kentucky | Democratic | 1837–1903 |
| Joseph Pearson Caldwell | 1849–1853 | North Carolina | Whig | 1808–1853 |
| Millard Caldwell | 1933–1941 | Florida | Democratic | 1897–1984 |
| Patrick C. Caldwell | 1841–1843 | South Carolina | Democratic | 1801–1855 |
| Robert Porter Caldwell | 1871–1873 | Tennessee | Democratic | 1821–1885 |
| William Parker Caldwell | 1875–1879 | Tennessee | Democratic | 1832–1903 |
| Thomas Cale | 1907–1909 | Alaska | Independent | 1848–1941 |
| John Calhoon | 1827 1835–1837 | Kentucky | National Republican | 1793–1852 |
| John Calhoon | 1837–1839 | Kentucky | Whig | 1793–1852 |
| John C. Calhoun | 1811–1817 | South Carolina | Democratic-Republican | 1782–1850 |
| Joseph Calhoun | 1807–1811 | South Carolina | Democratic-Republican | 1750–1817 |
| William B. Calhoun | 1835–1837 | Massachusetts | National Republican | 1796–1865 |
| William B. Calhoun | 1837–1843 | Massachusetts | Whig | 1796–1865 |
| Hervey C. Calkin | 1869–1871 | New York | Democratic | 1828–1913 |
| William H. Calkins | 1877–1884 | Indiana | Republican | 1842–1894 |
| Jacob Call | 1824–1825 | Indiana | Democratic-Republican | ????–1826 |
| Richard K. Call | 1823–1825 | Florida | None | 1792–1862 |
| James Yancy Callahan | 1897–1899 | Oklahoma | Free Silver | 1852–1935 |
| Sonny Callahan | 1985–2003 | Alabama | Republican | 1932–2021 |
| Clair A. Callan | 1965–1967 | Nebraska | Democratic | 1920–2005 |
| Bo Callaway | 1965–1967 | Georgia | Republican | 1927–2014 |
| Oscar Callaway | 1911–1917 | Texas | Democratic | 1872–1947 |
| John Benton Callis | 1868–1869 | Alabama | Republican | 1828–1898 |
| Charles Benedict Calvert | 1861–1863 | Maryland | Unionist | 1808–1864 |
| Samuel Calvin | 1849–1851 | Pennsylvania | Whig | 1811–1890 |
| Churchill C. Cambreleng | 1821–1825 | New York | Democratic-Republican | 1786–1862 |
| Churchill C. Cambreleng | 1825–1839 | New York | Democratic | 1786–1862 |
| Ralph H. Cameron | 1909–1912 | Arizona | Democratic | 1863–1953 |
| Ronald B. Cameron | 1963–1967 | California | Democratic | 1927–2006 |
| Anthony Caminetti | 1891–1895 | California | Democratic | 1854–1923 |
| A. Sidney Camp | 1939–1954 | Georgia | Democratic | 1892–1954 |
| Dave Camp | 1991–2015 | Michigan | Republican | 1953–present |
| John H. Camp | 1877–1883 | New York | Republican | 1840–1892 |
| John Newbold Camp | 1969–1975 | Oklahoma | Republican | 1908–1987 |
| Albert J. Campbell | 1899–1901 | Montana | Democratic | 1857–1907 |
| Alexander Campbell | 1875–1877 | Illinois | Independent | 1814–1898 |
| Ben Nighthorse Campbell | 1987–1993 | Colorado | Democratic | 1933–present |
| Brookins Campbell | 1853 | Tennessee | Democratic | 1808–1853 |
| Carroll A. Campbell Jr. | 1979–1987 | South Carolina | Republican | 1940–2005 |
| Courtney W. Campbell | 1953–1955 | Florida | Democratic | 1895–1971 |
| Ed H. Campbell | 1929–1933 | Iowa | Republican | 1882–1969 |
| Felix Campbell | 1883–1891 | New York | Democratic | 1829–1902 |
| George W. Campbell | 1803–1809 | Tennessee | Democratic-Republican | 1769–1848 |
| Guy E. Campbell | 1917–1923 | Pennsylvania | Democratic | 1871–1940 |
| Guy E. Campbell | 1923–1933 | Pennsylvania | Republican | 1871–1940 |
| Howard E. Campbell | 1945–1947 | Pennsylvania | Republican | 1890–1971 |
| Jacob M. Campbell | 1877–1879 1881–1887 | Pennsylvania | Republican | 1821–1888 |
| James E. Campbell | 1884–1889 | Ohio | Democratic | 1843–1924 |
| James Hepburn Campbell | 1855–1857 | Pennsylvania | Oppositionist | 1820–1895 |
| James Hepburn Campbell | 1859–1863 | Pennsylvania | Republican | 1820–1895 |
| James R. Campbell | 1897–1899 | Illinois | Democratic | 1853–1924 |
| John Campbell | 1801–1811 | Maryland | Federalist | 1765–1828 |
| John Campbell | 1829–1831 | South Carolina | Democratic | 1???–1845 |
| John Campbell | 1837–1839 | South Carolina | Nullifier | 1???–1845 |
| John Campbell | 1839–1845 | South Carolina | Democratic | 1???–1845 |
| John Campbell | 2005–2015 | California | Republican | 1955–present |
| John G. Campbell | 1879–1881 | Arizona | Democratic | 1827–1903 |
| John Hull Campbell | 1845–1847 | Pennsylvania | American | 1800–1868 |
| John P. Campbell Jr. | 1855–1857 | Kentucky | American | 1820–1888 |
| John Wilson Campbell | 1817–1825 | Ohio | Democratic-Republican | 1782–1833 |
| John Wilson Campbell | 1825–1827 | Ohio | National Republican | 1782–1833 |
| Lewis D. Campbell | 1849–1855 | Ohio | Whig | 1811–1882 |
| Lewis D. Campbell | 1855–1857 | Ohio | Oppositionist | 1811–1882 |
| Lewis D. Campbell | 1857–1858 | Ohio | Republican | 1811–1882 |
| Lewis D. Campbell | 1871–1873 | Ohio | Democratic | 1811–1882 |
| Philip P. Campbell | 1903–1923 | Kansas | Republican | 1862–1941 |
| Robert B. Campbell | 1823–1825 | South Carolina | Democratic-Republican | ????–1862 |
| Robert B. Campbell | 1834–1837 | South Carolina | Nullifier | ????–1862 |
| Samuel Campbell | 1821–1823 | New York | Democratic-Republican | 1773–1853 |
| Thomas Jefferson Campbell | 1841–1843 | Tennessee | Whig | 1786–1850 |
| Thompson Campbell | 1851–1853 | Illinois | Democratic | 1811–1868 |
| Timothy J. Campbell | 1885–1889 1891–1895 | New York | Democratic | 1840–1904 |
| Tom Campbell | 1989–1993 1995–2001 | California | Republican | 1952–present |
| William B. Campbell | 1837–1843 | Tennessee | Whig | 1807–1867 |
| William B. Campbell | 1866–1867 | Tennessee | Unionist | 1807–1867 |
| William W. Campbell | 1845–1847 | New York | American | 1806–1881 |
| William Wildman Campbell | 1905–1907 | Ohio | Republican | 1853–1927 |
| Charles Canady | 1993–2001 | Florida | Republican | 1954–present |
| Richard S. Canby | 1847–1849 | Ohio | Whig | 1808–1895 |
| Allen D. Candler | 1883–1891 | Georgia | Democratic | 1834–1910 |
| Ezekiel S. Candler Jr. | 1901–1921 | Mississippi | Democratic | 1862–1944 |
| John W. Candler | 1881–1883 1889–1891 | Massachusetts | Republican | 1828–1903 |
| Milton A. Candler | 1875–1879 | Georgia | Democratic | 1837–1909 |
| Gordon Canfield | 1941–1961 | New Jersey | Republican | 1898–1972 |
| Harry C. Canfield | 1923–1933 | Indiana | Democratic | 1875–1945 |
| Chris Cannon | 1997–2009 | Utah | Republican | 1950–2024 |
| Clarence Cannon | 1923–1964 | Missouri | Democratic | 1879–1964 |
| Frank J. Cannon | 1895–1896 | Utah | Republican | 1859–1933 |
| George Q. Cannon | 1873–1882 | Utah | Republican | 1827–1901 |
| Joseph Gurney Cannon | 1873–1891 1893–1913 1915–1923 | Illinois | Republican | 1836–1926 |
| Marion Cannon | 1893–1895 | California | Populist | 1834–1920 |
| Newton Cannon | 1814–1817 1819–1823 | Tennessee | Democratic-Republican | 1781–1841 |
| Pat Cannon | 1939–1947 | Florida | Democratic | 1904–1966 |
| Raymond J. Cannon | 1933–1939 | Wisconsin | Democratic | 1894–1951 |
| Quico Canseco | 2011–2013 | Texas | Republican | 1949–present |
| Eric Cantor | 2001–2014 | Virginia | Republican | 1963–present |
| Jacob A. Cantor | 1913–1915 | New York | Democratic | 1854–1921 |
| J. Campbell Cantrill | 1909–1923 | Kentucky | Democratic | 1870–1923 |
| Maria Cantwell | 1993–1995 | Washington | Democratic | 1958–present |
| Joseph Cao | 2009–2011 | Louisiana | Republican | 1967–present |
| James Capehart | 1891–1895 | West Virginia | Democratic | 1847–1921 |
| Hugh Caperton | 1813–1815 | Virginia | Federalist | 1781–1847 |
| Shelley Moore Capito | 2001–2015 | West Virginia | Republican | 1953–present |
| Louis Capozzoli | 1941–1945 | New York | Democratic | 1901–1982 |
| Lois Capps | 1998–2017 | California | Democratic | 1938–present |
| Walter Capps | 1997 | California | Democratic | 1934–1997 |
| Adin B. Capron | 1897–1911 | Rhode Island | Republican | 1841–1911 |
| John H. Capstick | 1915–1918 | New Jersey | Republican | 1856–1918 |
| Mike Capuano | 1999–2013 | Massachusetts | Democratic | 1952–present |
| Bruce F. Caputo | 1977–1979 | New York | Republican | 1943–present |
| Yadira Caraveo | 2023–2025 | Colorado | Democratic | 1980–present |
| Thaddeus H. Caraway | 1913–1921 | Arkansas | Democratic | 1871–1931 |
| Cap R. Carden | 1931–1935 | Kentucky | Democratic | 1866–1935 |
| Tony Cárdenas | 2013–2025 | California | Democratic | 1963–present |
| Ben Cardin | 1987–2007 | Maryland | Democratic | 1943–present |
| Dennis Cardoza | 2003–2012 | California | Democratic | 1959–present |
| John F. Carew | 1913–1929 | New York | Democratic | 1873–1951 |
| Hugh Carey | 1961–1974 | New York | Democratic | 1919–2011 |
| John Carey | 1859–1861 | Ohio | Republican | 1792–1875 |
| Joseph M. Carey | 1885–1890 | Wyoming | Republican | 1845–1924 |
| Jerry Carl | 2021–2025 | Alabama | Republican | 1958–present |
| Ezra C. Carleton | 1883–1887 | Michigan | Democratic | 1838–1911 |
| Peter Carleton | 1807–1809 | New Hampshire | Democratic-Republican | 1755–1828 |
| Patrick J. Carley | 1927–1935 | New York | Democratic | 1866–1936 |
| John S. Carlile | 1855–1857 | Virginia | American | 1817–1878 |
| John S. Carlile | 1861 | Virginia | Unionist | 1817–1878 |
| Charles Creighton Carlin | 1907–1919 | Virginia | Democratic | 1866–1938 |
| John G. Carlisle | 1877–1890 | Kentucky | Democratic | 1834–1910 |
| Cliffard D. Carlson | 1972–1973 | Illinois | Republican | 1915–1977 |
| Frank Carlson | 1935–1947 | Kansas | Republican | 1893–1987 |
| Henry H. Carlton | 1887–1891 | Georgia | Democratic | 1835–1905 |
| F. Ertel Carlyle | 1949–1957 | North Carolina | Democratic | 1897–1960 |
| Edward W. Carmack | 1897–1901 | Tennessee | Democratic | 1858–1908 |
| Gregory W. Carman | 1981–1983 | New York | Republican | 1937–2020 |
| Archibald H. Carmichael | 1933–1937 | Alabama | Democratic | 1864–1947 |
| Richard Bennett Carmichael | 1833–1835 | Maryland | Democratic | 1807–1884 |
| A. S. J. Carnahan | 1945–1947 1949–1961 | Missouri | Democratic | 1897–1968 |
| Russ Carnahan | 2005–2013 | Missouri | Democratic | 1958–present |
| Thomas P. Carnes | 1793–1795 | Georgia | Anti-Administration | 1762–1822 |
| Charles J. Carney | 1970–1979 | Ohio | Democratic | 1913–1987 |
| Chris Carney | 2007–2011 | Pennsylvania | Democratic | 1959–present |
| John Carney | 2011–2017 | Delaware | Democratic | 1956–present |
| William Carney | 1979–1985 1985–1987 | New York | Conservative Republican | 1942–2017 |
| Cyrus C. Carpenter | 1879–1883 | Iowa | Republican | 1829–1898 |
| Davis Carpenter | 1853–1855 | New York | Whig | 1799–1878 |
| Edmund N. Carpenter | 1925–1927 | Pennsylvania | Republican | 1865–1952 |
| Levi D. Carpenter | 1844–1845 | New York | Democratic | 1802–1856 |
| Lewis C. Carpenter | 1874–1875 | South Carolina | Republican | 1836–1908 |
| Randolph Carpenter | 1933–1937 | Kansas | Democratic | 1894–1956 |
| Terry Carpenter | 1933–1935 | Nebraska | Democratic | 1900–1978 |
| Tom Carper | 1983–1993 | Delaware | Democratic | 1947–present |
| Bob Carr | 1975–1981 1983–1995 | Michigan | Democratic | 1943–2024 |
| Francis Carr | 1812–1813 | Massachusetts | Democratic-Republican | 1751–1821 |
| James Carr | 1815–1817 | Massachusetts | Federalist | 1777–1818 |
| John Carr | 1831–1837 1839–1841 | Indiana | Democratic | 1793–1845 |
| Nathan T. Carr | 1876–1877 | Indiana | Democratic | 1833–1885 |
| Wooda N. Carr | 1913–1915 | Pennsylvania | Democratic | 1871–1953 |
| Chester O. Carrier | 1943–1945 | Kentucky | Republican | 1897–1980 |
| Joseph L. Carrigg | 1951–1959 | Pennsylvania | Republican | 1901–1989 |
| Charles H. Carroll | 1843–1847 | New York | Whig | 1794–1865 |
| Daniel Carroll | 1789–1791 | Maryland | Pro-Administration | 1730–1796 |
| James Carroll | 1839–1841 | Maryland | Democratic | 1791–1873 |
| John A. Carroll | 1947–1951 | Colorado | Democratic | 1901–1983 |
| John M. Carroll | 1871–1873 | New York | Democratic | 1823–1901 |
| Brad Carson | 2001–2005 | Oklahoma | Democratic | 1967–present |
| Henderson H. Carson | 1943–1945 1947–1949 | Ohio | Republican | 1893–1971 |
| Julia Carson | 1997–2007 | Indiana | Democratic | 1938–2007 |
| Samuel Price Carson | 1825–1833 | North Carolina | Democratic | 1798–1838 |
| William Leighton Carss | 1919–1921 1925–1929 | Minnesota | Farmer-Labor | 1865–1931 |
| Albert E. Carter | 1925–1945 | California | Republican | 1881–1964 |
| Charles D. Carter | 1907–1927 | Oklahoma | Democratic | 1868–1929 |
| John Carter | 1822–1825 | South Carolina | Democratic-Republican | 1792–1850 |
| John Carter | 1825–1829 | South Carolina | Democratic | 1792–1850 |
| Luther C. Carter | 1859–1861 | New York | Republican | 1805–1875 |
| Steven V. Carter | 1959 | Iowa | Democratic | 1915–1959 |
| Thomas H. Carter | 1889 1889–1891 | Montana | Republican | 1854–1911 |
| Tim Lee Carter | 1965–1981 | Kentucky | Republican | 1910–1987 |
| Timothy J. Carter | 1837–1838 | Maine | Democratic | 1800–1838 |
| Vincent Carter | 1929–1935 | Wyoming | Republican | 1891–1972 |
| William Blount Carter | 1835–1837 | Tennessee | National Republican | 1792–1848 |
| William Blount Carter | 1837–1841 | Tennessee | Whig | 1792–1848 |
| William Henry Carter | 1915–1919 | Massachusetts | Republican | 1864–1955 |
| David Kellogg Cartter | 1849–1853 | Ohio | Democratic | 1812–1887 |
| Matt Cartwright | 2013–2025 | Pennsylvania | Democratic | 1961–present |
| Wilburn Cartwright | 1927–1943 | Oklahoma | Democratic | 1892–1979 |
| Asher G. Caruth | 1887–1895 | Kentucky | Democratic | 1844–1907 |
| Robert L. Caruthers | 1841–1843 | Tennessee | Whig | 1800–1882 |
| Samuel Caruthers | 1853–1855 | Missouri | Whig | 1820–1860 |
| Samuel Caruthers | 1855–1857 | Missouri | Oppositionist | 1820–1860 |
| Samuel Caruthers | 1857–1859 | Missouri | Democratic | 1820–1860 |
| George Cary | 1823–1825 | Georgia | Democratic-Republican | 1789–1843 |
| George Cary | 1825–1827 | Georgia | Democratic | 1789–1843 |
| George B. Cary | 1841–1843 | Virginia | Democratic | 1811–1850 |
| Glover H. Cary | 1931–1936 | Kentucky | Democratic | 1885–1936 |
| Jeremiah E. Cary | 1843–1845 | New York | Democratic | 1803–1888 |
| Samuel Fenton Cary | 1867–1869 | Ohio | Independent Republican | 1814–1900 |
| Shepard Cary | 1844–1845 | Maine | Democratic | 1805–1866 |
| William J. Cary | 1907–1919 | Wisconsin | Republican | 1865–1934 |
| Charles Case | 1857–1861 | Indiana | Republican | 1817–1883 |
| Clifford P. Case | 1945–1953 | New Jersey | Republican | 1904–1982 |
| Francis Case | 1937–1951 | South Dakota | Republican | 1896–1962 |
| Walter Case | 1819–1821 | New York | Democratic-Republican | 1776–1859 |
| John J. Casey | 1913–1917 1919–1921 1923–1925 1927–1929 | Pennsylvania | Democratic | 1875–1929 |
| Joseph Casey | 1849–1851 | Pennsylvania | Whig | 1814–1879 |
| Joseph E. Casey | 1935–1943 | Massachusetts | Democratic | 1898–1980 |
| Levi Casey | 1803–1807 | South Carolina | Democratic-Republican | c. 1752 – 1807 |
| Robert R. Casey | 1959–1976 | Texas | Democratic | 1915–1986 |
| Samuel L. Casey | 1862–1863 | Kentucky | Unionist | 1821–1902 |
| Zadok Casey | 1833–1841 | Illinois | Democratic | 1796–1862 |
| Zadok Casey | 1841–1843 | Illinois | Independent Democrat | 1796–1862 |
| John Caskie | 1851–1859 | Virginia | Democratic | 1821–1869 |
| Thomas J. Cason | 1873–1877 | Indiana | Republican | 1828–1901 |
| George Cassedy | 1821–1825 | New Jersey | Democratic-Republican | 1783–1842 |
| George Cassedy | 1825–1827 | New Jersey | Democratic | 1783–1842 |
| Henry B. Cassel | 1901–1909 | Pennsylvania | Republican | 1855–1926 |
| Bill Cassidy | 2009–2015 | Louisiana | Republican | 1957–present |
| George W. Cassidy | 1881–1885 | Nevada | Democratic | 1836–1892 |
| James H. Cassidy | 1909–1911 | Ohio | Republican | 1869–1926 |
| John W. Cassingham | 1901–1905 | Ohio | Democratic | 1840–1930 |
| Bryant T. Castellow | 1932–1937 | Georgia | Democratic | 1876–1962 |
| Curtis H. Castle | 1897–1899 | California | Populist | 1848–1928 |
| James Castle | 1891–1893 | Minnesota | Democratic | 1836–1903 |
| Mike Castle | 1993–2011 | Delaware | Republican | 1939–present |
| George A. Castor | 1904–1906 | Pennsylvania | Republican | 1855–1906 |
| Lucien B. Caswell | 1875–1883 1885–1891 | Wisconsin | Republican | 1827–1919 |
| Thomas C. Catchings | 1885–1901 | Mississippi | Democratic | 1847–1927 |
| George W. Cate | 1875–1877 | Wisconsin | Democratic | 1825–1905 |
| William H. Cate | 1889–1890 1891–1893 | Arkansas | Democratic | 1839–1899 |
| Charles W. Cathcart | 1845–1849 | Indiana | Democratic | 1809–1888 |
| George S. Catlin | 1843–1845 | Connecticut | Democratic | 1808–1851 |
| Theron E. Catlin | 1911–1912 | Missouri | Republican | 1878–1960 |
| Thomas B. Catron | 1895–1897 | New Mexico | Republican | 1840–1921 |
| Bernard G. Caulfield | 1875–1877 | Illinois | Democratic | 1828–1887 |
| Henry S. Caulfield | 1907–1909 | Missouri | Republican | 1873–1966 |
| John W. Causey | 1891–1895 | Delaware | Democratic | 1841–1908 |
| John Causin | 1843–1845 | Maryland | Whig | 1811–1861 |
| Anthony Cavalcante | 1949–1951 | Pennsylvania | Democratic | 1897–1966 |
| James M. Cavanaugh | 1858–1859 1867–1871 | Minnesota Montana | Democratic | 1823–1879 |
| John Joseph Cavanaugh III | 1977–1981 | Nebraska | Democratic | 1945–present |
| Peter A. Cavicchia | 1931–1937 | New Jersey | Republican | 1879–1967 |
| Madison Cawthorn | 2021–2023 | North Carolina | Republican | 1995–present |
| Don Cazayoux | 2008–2009 | Louisiana | Democratic | 1964–present |
| Al Cederberg | 1953–1978 | Michigan | Republican | 1918–2006 |
| Emanuel Celler | 1923–1973 | New York | Democratic | 1888–1981 |
| John Cessna | 1869–1871 1873–1875 | Pennsylvania | Republican | 1821–1893 |
| Steve Chabot | 1995–2009 2011–2023 | Ohio | Republican | 1953–present |
| Jonathan Chace | 1881–1885 | Rhode Island | Republican | 1829–1917 |
| E. Wallace Chadwick | 1947–1949 | Pennsylvania | Republican | 1884–1969 |
| Calvin C. Chaffee | 1855–1857 | Massachusetts | American | 1811–1896 |
| Calvin C. Chaffee | 1857–1859 | Massachusetts | Republican | 1811–1896 |
| Jerome B. Chaffee | 1871–1875 | Colorado | Republican | 1825–1886 |
| Jason Chaffetz | 2009–2017 | Utah | Republican | 1967–present |
| James Ronald Chalmers | 1877–1882 | Mississippi | Democratic | 1831–1898 |
| James Ronald Chalmers | 1884–1885 | Mississippi | Independent | 1831–1898 |
| William W. Chalmers | 1921–1923 1925–1931 | Ohio | Republican | 1861–1944 |
| Charles E. Chamberlain | 1957–1974 | Michigan | Republican | 1917–2002 |
| Ebenezer M. Chamberlain | 1853–1855 | Indiana | Democratic | 1805–1861 |
| Jacob P. Chamberlain | 1861–1863 | New York | Republican | 1802–1878 |
| John Curtis Chamberlain | 1809–1811 | New Hampshire | Federalist | 1772–1834 |
| William Chamberlain | 1803–1805 1809–1811 | Vermont | Federalist | 1755–1828 |
| David Chambers | 1821–1823 | Ohio | Democratic-Republican | 1780–1864 |
| George Chambers | 1833–1837 | Pennsylvania | Anti-Masonic | 1786–1866 |
| John Chambers | 1828–1829 1835–1837 | Kentucky | National Republican | 1780–1852 |
| John Chambers | 1837–1839 | Kentucky | Whig | 1780–1852 |
| Saxby Chambliss | 1995–2003 | Georgia | Republican | 1943–present |
| Edwin V. Champion | 1937–1939 | Illinois | Democratic | 1890–1976 |
| Epaphroditus Champion | 1807–1817 | Connecticut | Federalist | 1756–1834 |
| Christopher G. Champlin | 1797–1801 | Rhode Island | Federalist | 1768–1840 |
| Ben Chandler | 2004–2013 | Kentucky | Democratic | 1959–present |
| John Chandler | 1805–1809 | Massachusetts | Democratic-Republican | 1762–1841 |
| Joseph R. Chandler | 1849–1855 | Pennsylvania | Whig | 1792–1880 |
| Rod Chandler | 1983–1993 | Washington | Republican | 1942–present |
| Thomas Chandler | 1829–1833 | New Hampshire | Democratic | 1772–1866 |
| Thomas A. Chandler | 1917–1919 1921–1923 | Oklahoma | Republican | 1871–1953 |
| Walter Chandler | 1935–1940 | Tennessee | Democratic | 1887–1967 |
| Walter M. Chandler | 1913–1917 | New York | Progressive | 1867–1935 |
| Walter M. Chandler | 1917–1919 1921–1923 | New York | Republican | 1867–1935 |
| John Chaney | 1833–1839 | Ohio | Democratic | 1790–1881 |
| John C. Chaney | 1905–1909 | Indiana | Republican | 1853–1940 |
| John Winthrop Chanler | 1863–1869 | New York | Democratic | 1826–1877 |
| William A. Chanler | 1899–1901 | New York | Democratic | 1867–1934 |
| Alfred C. Chapin | 1891–1892 | New York | Democratic | 1848–1936 |
| Chester W. Chapin | 1875–1877 | Massachusetts | Democratic | 1798–1883 |
| Graham H. Chapin | 1835–1837 | New York | Democratic | 1799–1843 |
| Andrew G. Chapman | 1881–1883 | Maryland | Democratic | 1839–1892 |
| Augustus A. Chapman | 1843–1847 | Virginia | Democratic | 1805–1876 |
| Bird Beers Chapman | 1855–1857 | Nebraska | Democratic | 1821–1871 |
| Charles Chapman | 1851–1853 | Connecticut | Whig | 1799–1869 |
| Henry Chapman | 1857–1859 | Pennsylvania | Democratic | 1804–1891 |
| Jim Chapman | 1985–1997 | Texas | Democratic | 1945–present |
| John Chapman | 1797–1799 | Pennsylvania | Federalist | 1740–1800 |
| John G. Chapman | 1845–1849 | Maryland | Whig | 1798–1856 |
| Pleasant T. Chapman | 1905–1911 | Illinois | Republican | 1854–1931 |
| Reuben Chapman | 1835–1847 | Alabama | Democratic | 1799–1882 |
| Virgil Chapman | 1925–1929 1931–1949 | Kentucky | Democratic | 1895–1951 |
| William W. Chapman | 1838–1840 | Iowa | Democratic | 1808–1892 |
| Absalom H. Chappell | 1843–1845 | Georgia | Whig | 1801–1878 |
| Bill Chappell | 1969–1989 | Florida | Democratic | 1922–1989 |
| John J. Chappell | 1813–1817 | South Carolina | Democratic-Republican | 1782–1871 |
| Eugene A. Chappie | 1981–1987 | California | Republican | 1920–1992 |
| William B. Charles | 1915–1917 | New York | Republican | 1861–1950 |
| George W. Chase | 1853–1855 | New York | Whig | ????–1867 |
| J. Mitchell Chase | 1927–1933 | Pennsylvania | Republican | 1891–1945 |
| Jackson B. Chase | 1955–1957 | Nebraska | Republican | 1890–1974 |
| Lucien Bonaparte Chase | 1845–1849 | Tennessee | Democratic | 1817–1864 |
| Ray P. Chase | 1933–1935 | Minnesota | Republican | 1880–1948 |
| Samuel Chase | 1827–1829 | New York | National Republican | 1???–1838 |
| Elijah W. Chastain | 1851–1853 | Georgia | Unionist | 1813–1874 |
| Elijah W. Chastain | 1853–1855 | Georgia | Democratic | 1813–1874 |
| R. Thurmond Chatham | 1949–1957 | North Carolina | Democratic | 1896–1957 |
| José Francisco Chaves | 1865–1867 1869–1871 | New Mexico | Republican | 1833–1904 |
| Dennis Chávez | 1931–1935 | New Mexico | Democratic | 1888–1962 |
| Lori Chavez-DeRemer | 2023–2025 | Oregon | Republican | 1968–present |
| Joseph B. Cheadle | 1887–1891 | Indiana | Republican | 1842–1904 |
| Henry P. Cheatham | 1889–1893 | North Carolina | Republican | 1857–1935 |
| Richard Cheatham | 1837–1839 | Tennessee | Whig | 1799–1845 |
| Frank Chelf | 1945–1967 | Kentucky | Democratic | 1907–1982 |
| Dick Cheney | 1979–1989 | Wyoming | Republican | 1941–present |
| Liz Cheney | 2017–2023 | Wyoming | Republican | 1966–present |
| John Chenoweth | 1941–1949 1951–1965 | Colorado | Republican | 1897–1986 |
| Helen Chenoweth-Hage | 1995–2001 | Idaho | Republican | 1938–2006 |
| Chester A. Chesney | 1949–1951 | Illinois | Democratic | 1916–1986 |
| William Chetwood | 1836–1837 | New Jersey | Whig | 1771–1857 |
| Langdon Cheves | 1810–1815 | South Carolina | Democratic-Republican | 1776–1857 |
| Charles A. Chickering | 1893–1900 | New York | Republican | 1843–1900 |
| George M. Chilcott | 1867–1869 | Colorado | Republican | 1828–1891 |
| Thomas Child Jr. | 1856–1857 | New York | Oppositionist | 1818–1869 |
| Travis Childers | 2008–2011 | Mississippi | Democratic | 1958–present |
| Robert A. Childs | 1893–1895 | Illinois | Republican | 1845–1915 |
| Timothy Childs | 1829–1831 | New York | Anti-Masonic | 1785–1847 |
| Timothy Childs | 1835–1837 | New York | National Republican | 1785–1847 |
| Timothy Childs | 1837–1839 1841–1843 | New York | Whig | 1785–1847 |
| Samuel Chilton | 1843–1845 | Virginia | Whig | 1804–1867 |
| Thomas Chilton | 1827–1831 | Kentucky | Democratic | 1798–1854 |
| Thomas Chilton | 1833–1835 | Kentucky | National Republican | 1798–1854 |
| Carl R. Chindblom | 1919–1933 | Illinois | Republican | 1870–1956 |
| Joseph Chinn | 1831–1835 | Virginia | Democratic | 1798–1840 |
| Thomas W. Chinn | 1839–1841 | Louisiana | Whig | 1791–1852 |
| Burnett M. Chiperfield | 1915–1917 1930–1933 | Illinois | Republican | 1870–1940 |
| Robert B. Chiperfield | 1939–1963 | Illinois | Republican | 1899–1971 |
| Daniel Chipman | 1815–1816 | Vermont | Federalist | 1765–1850 |
| J. Logan Chipman | 1887–1893 | Michigan | Democratic | 1830–1893 |
| John Smith Chipman | 1845–1847 | Michigan | Democratic | 1800–1869 |
| Norton P. Chipman | 1871–1875 | District of Columbia | Republican | 1834–1924 |
| Shirley Chisholm | 1969–1983 | New York | Democratic | 1924–2005 |
| Martin Chittenden | 1803–1813 | Vermont | Federalist | 1763–1840 |
| Simeon B. Chittenden | 1874–1877 | New York | Independent Republican | 1814–1889 |
| Simeon B. Chittenden | 1877–1881 | New York | Republican | 1814–1889 |
| Thomas C. Chittenden | 1839–1843 | New York | Whig | 1788–1866 |
| Rufus Choate | 1831–1834 | Massachusetts | National Republican | 1799–1859 |
| Chris Chocola | 2003–2007 | Indiana | Republican | 1962–present |
| James Chrisman | 1853–1855 | Kentucky | Democratic | 1818–1881 |
| Jon Christensen | 1995–1999 | Nebraska | Republican | 1963–present |
| Victor Christgau | 1929–1933 | Minnesota | Republican | 1894–1991 |
| Donna Christensen | 1997–2015 | U.S. Virgin Islands | Democratic | 1945–present |
| Theodore Christianson | 1933–1937 | Minnesota | Republican | 1883–1948 |
| Gabriel Christie | 1793–1795 | Maryland | Anti-Administration | 1756–1808 |
| Gabriel Christie | 1795–1797 1799–1801 | Maryland | Democratic-Republican | 1756–1808 |
| George H. Christopher | 1949–1951 1955–1959 | Missouri | Democratic | 1888–1959 |
| Charles A. Christopherson | 1919–1933 | South Dakota | Republican | 1871–1951 |
| Dick Chrysler | 1995–1997 | Michigan | Republican | 1942–present |
| Earl Chudoff | 1949–1958 | Pennsylvania | Democratic | 1907–1993 |
| Denver S. Church | 1913–1919 1933–1935 | California | Democratic | 1862–1952 |
| Marguerite Stitt Church | 1951–1963 | Illinois | Republican | 1892–1990 |
| Ralph E. Church | 1935–1941 1943–1950 | Illinois | Republican | 1883–1950 |
| George B. Churchill | 1925 | Massachusetts | Republican | 1866–1925 |
| John C. Churchill | 1867–1871 | New York | Republican | 1821–1905 |
| William M. Churchwell | 1851–1855 | Tennessee | Democratic | 1826–1862 |
| David Cicilline | 2011–2023 | Rhode Island | Democratic | 1961–present |
| Bradbury Cilley | 1813–1817 | New Hampshire | Federalist | 1760–1831 |
| Jonathan Cilley | 1837–1838 | Maine | Democratic | 1802–1838 |
| William M. Citron | 1935–1939 | Connecticut | Democratic | 1896–1976 |
| William Claflin | 1877–1881 | Massachusetts | Republican | 1818–1905 |
| Clifton Clagett | 1803–1805 | New Hampshire | Federalist | 1762–1829 |
| Clifton Clagett | 1817–1821 | New Hampshire | Democratic-Republican | 1762–1829 |
| William H. Clagett | 1871–1873 | Montana | Republican | 1838–1901 |
| Frank Clague | 1921–1933 | Minnesota | Republican | 1865–1952 |
| John Francis Hamtramck Claiborne | 1835–1838 | Mississippi | Democratic | 1809–1884 |
| James R. Claiborne | 1933–1937 | Missouri | Democratic | 1882–1944 |
| John Claiborne | 1805–1808 | Virginia | Democratic-Republican | 1777–1808 |
| Nathaniel Claiborne | 1825–1835 | Virginia | Democratic | 1777–1859 |
| Nathaniel Claiborne | 1835–1837 | Virginia | National Republican | 1777–1859 |
| Thomas Claiborne | 1793–1795 | Virginia | Anti-Administration | 1749–1812 |
| Thomas Claiborne | 1795–1799 1801–1805 | Virginia | Democratic-Republican | 1749–1812 |
| Thomas Claiborne | 1817–1819 | Tennessee | Democratic-Republican | 1780–1856 |
| William C. C. Claiborne | 1797–1801 | Tennessee | Democratic-Republican | 1775–1817 |
| Donald D. Clancy | 1961–1977 | Ohio | Republican | 1921–2007 |
| John Michael Clancy | 1889–1895 | New York | Democratic | 1837–1903 |
| John R. Clancy | 1913–1915 | New York | Democratic | 1859–1932 |
| Robert H. Clancy | 1923–1925 | Michigan | Democratic | 1882–1962 |
| Robert H. Clancy | 1927–1933 | Michigan | Republican | 1882–1962 |
| Asa Clapp | 1847–1849 | Maine | Democratic | 1805–1891 |
| John D. Clardy | 1895–1899 | Kentucky | Democratic | 1828–1918 |
| Kit Clardy | 1953–1955 | Michigan | Republican | 1892–1961 |
| Martin L. Clardy | 1879–1889 | Missouri | Democratic | 1844–1914 |
| Abraham Clark | 1791–1794 | New Jersey | Pro-Administration | 1726–1794 |
| Alvah A. Clark | 1877–1881 | New Jersey | Democratic | 1840–1912 |
| Ambrose W. Clark | 1861–1865 | New York | Republican | 1810–1887 |
| Amos Clark Jr. | 1873–1875 | New Jersey | Republican | 1828–1912 |
| Champ Clark | 1893–1895 1897–1921 | Missouri | Democratic | 1850–1921 |
| Charles B. Clark | 1887–1891 | Wisconsin | Republican | 1844–1891 |
| Charles N. Clark | 1895–1897 | Missouri | Republican | 1827–1902 |
| Christopher H. Clark | 1804–1806 | Virginia | Democratic-Republican | 1767–1828 |
| Clarence D. Clark | 1890–1893 | Wyoming | Republican | 1851–1930 |
| D. Worth Clark | 1935–1939 | Idaho | Democratic | 1902–1955 |
| Daniel Clark | 1806–1809 | Orleans | None | c. 1766 – 1813 |
| Ezra Clark Jr. | 1855–1857 | Connecticut | American | 1813–1896 |
| Ezra Clark Jr. | 1857–1859 | Connecticut | Republican | 1813–1896 |
| Frank Clark | 1905–1925 | Florida | Democratic | 1860–1936 |
| Frank M. Clark | 1955–1974 | Pennsylvania | Democratic | 1915–2003 |
| Franklin Clark | 1847–1849 | Maine | Democratic | 1801–1874 |
| Henry Alden Clark | 1917–1919 | Pennsylvania | Republican | 1850–1944 |
| Henry Selby Clark | 1845–1847 | North Carolina | Democratic | 1809–1869 |
| Horace F. Clark | 1857–1859 | New York | Democratic | 1815–1873 |
| Horace F. Clark | 1859–1861 | New York | Anti-Lecompton Democratic | 1815–1873 |
| J. Bayard Clark | 1929–1949 | North Carolina | Democratic | 1882–1959 |
| James Clark | 1813–1816 | Kentucky | Democratic-Republican | 1779–1839 |
| James Clark | 1825–1831 | Kentucky | National Republican | 1779–1839 |
| James West Clark | 1815–1817 | North Carolina | Democratic-Republican | 1779–1843 |
| John Bullock Clark | 1857–1861 | Missouri | Democratic | 1802–1885 |
| John Bullock Clark Jr. | 1873–1883 | Missouri | Democratic | 1831–1903 |
| John C. Clark | 1827–1829 1837 | New York | Democratic | 1793–1852 |
| John C. Clark | 1837–1843 | New York | Whig | 1793–1852 |
| Lincoln Clark | 1851–1853 | Iowa | Democratic | 1800–1886 |
| Linwood Clark | 1929–1931 | Maryland | Republican | 1876–1965 |
| Lot Clark | 1823–1825 | New York | Democratic-Republican | 1788–1862 |
| Robert Clark | 1819–1821 | New York | Democratic-Republican | 1777–1837 |
| Rush Clark | 1877–1879 | Iowa | Republican | 1834–1879 |
| Samuel Clark | 1833–1835 | New York | Democratic | 1800–1870 |
| Samuel Clark | 1853–1855 | Michigan | Democratic | 1800–1870 |
| Samuel M. Clark | 1895–1899 | Iowa | Republican | 1842–1900 |
| William Clark | 1833–1837 | Pennsylvania | Anti-Masonic | 1774–1851 |
| William Thomas Clark | 1870–1872 | Texas | Republican | 1831–1905 |
| Archibald S. Clarke | 1816–1817 | New York | Democratic-Republican | 1788–1821 |
| Bayard Clarke | 1855–1857 | New York | Oppositionist | 1815–1884 |
| Beverly L. Clarke | 1847–1849 | Kentucky | Democratic | 1809–1860 |
| Charles E. Clarke | 1849–1851 | New York | Whig | 1790–1863 |
| Frank G. Clarke | 1897–1901 | New Hampshire | Republican | 1850–1901 |
| Freeman Clarke | 1863–1865 1871–1875 | New York | Republican | 1809–1887 |
| Hansen Clarke | 2011–2013 | Michigan | Democratic | 1957–present |
| James M. Clarke | 1983–1985 1987–1991 | North Carolina | Democratic | 1917–1999 |
| John Blades Clarke | 1875–1879 | Kentucky | Democratic | 1833–1911 |
| John D. Clarke | 1921–1925 1927–1933 | New York | Republican | 1873–1933 |
| Marian W. Clarke | 1933–1935 | New York | Republican | 1880–1953 |
| Reader W. Clarke | 1865–1869 | Ohio | Republican | 1812–1872 |
| Richard H. Clarke | 1889–1897 | Alabama | Democratic | 1843–1906 |
| Sidney Clarke | 1865–1871 | Kansas | Republican | 1831–1909 |
| Staley N. Clarke | 1841–1843 | New York | Whig | 1794–1860 |
| Charles R. Clason | 1937–1949 | Massachusetts | Republican | 1890–1985 |
| David G. Classon | 1917–1923 | Wisconsin | Republican | 1870–1930 |
| Don Clausen | 1963–1983 | California | Republican | 1923–2015 |
| Curt Clawson | 2014–2017 | Florida | Republican | 1959–present |
| Del M. Clawson | 1963–1978 | California | Republican | 1914–1992 |
| Isaiah D. Clawson | 1855–1857 | New Jersey | Oppositionist | 1822–1879 |
| Isaiah D. Clawson | 1857–1859 | New Jersey | Republican | 1822–1879 |
| Bill Clay | 1969–2001 | Missouri | Democratic | 1931–present |
| Brutus J. Clay | 1863–1865 | Kentucky | Unionist | 1808–1878 |
| Clement Comer Clay | 1829–1835 | Alabama | Democratic | 1789–1866 |
| Henry Clay | 1811–1814 1815–1821 1823–1825 | Kentucky | Democratic-Republican | 1777–1852 |
| James Brown Clay | 1857–1859 | Kentucky | Democratic | 1817–1864 |
| James F. Clay | 1883–1885 | Kentucky | Democratic | 1840–1921 |
| Joseph Clay | 1803–1808 | Pennsylvania | Democratic-Republican | 1769–1811 |
| Lacy Clay | 2001–2021 | Missouri | Democratic | 1956–present |
| Matthew Clay | 1797–1813 1815 | Virginia | Democratic-Republican | 1754–1815 |
| Harold K. Claypool | 1937–1943 | Ohio | Democratic | 1886–1958 |
| Horatio C. Claypool | 1911–1915 1917–1919 | Ohio | Democratic | 1859–1921 |
| Augustin S. Clayton | 1832–1835 | Georgia | Democratic | 1783–1839 |
| Bertram T. Clayton | 1899–1901 | New York | Democratic | 1862–1918 |
| Charles Clayton | 1873–1875 | California | Republican | 1825–1885 |
| Eva Clayton | 1992–2003 | North Carolina | Democratic | 1934–present |
| Henry D. Clayton Jr. | 1897–1914 | Alabama | Democratic | 1857–1929 |
| Thomas Clayton | 1815–1817 | Delaware | Federalist | 1777–1854 |
| William E. Cleary | 1917–1921 1923–1927 | New York | Democratic | 1849–1932 |
| Sherrard Clemens | 1852–1853 1857–1861 | Virginia | Democratic | 1820–1881 |
| Bob Clement | 1988–2003 | Tennessee | Democratic | 1943–present |
| L. Gary Clemente | 1949–1953 | New York | Democratic | 1908–1968 |
| Andrew Jackson Clements | 1861–1863 | Tennessee | Unionist | 1832–1913 |
| Earle C. Clements | 1945–1948 | Kentucky | Democratic | 1896–1985 |
| Isaac Clements | 1873–1875 | Illinois | Republican | 1837–1909 |
| Judson C. Clements | 1881–1891 | Georgia | Democratic | 1846–1917 |
| Newton Nash Clements | 1880–1881 | Alabama | Democratic | 1837–1900 |
| David Clendenin | 1814–1817 | Ohio | Democratic-Republican | N/A |
| Chauncey F. Cleveland | 1849–1853 | Connecticut | Democratic | 1799–1887 |
| James Colgate Cleveland | 1963–1981 | New Hampshire | Republican | 1920–1995 |
| Jesse Franklin Cleveland | 1835–1839 | Georgia | Democratic | 1804–1841 |
| Orestes Cleveland | 1869–1871 | New Jersey | Democratic | 1829–1896 |
| Cliff Clevenger | 1939–1959 | Ohio | Republican | 1885–1960 |
| Raymond F. Clevenger | 1965–1967 | Michigan | Democratic | 1926–2016 |
| Charles P. Clever | 1867–1869 | New Mexico | Democratic | 1830–1874 |
| Nathan Clifford | 1839–1843 | Maine | Democratic | 1803–1881 |
| Joseph W. Clift | 1868–1869 | Georgia | Republican | 1837–1908 |
| Duncan Lamont Clinch | 1844–1845 | Georgia | Whig | 1787–1849 |
| Cyrus Cline | 1909–1917 | Indiana | Democratic | 1856–1923 |
| William Clinger | 1979–1997 | Pennsylvania | Republican | 1929–2021 |
| Thomas L. Clingman | 1843–1845 1847–1853 | North Carolina | Whig | 1812–1897 |
| Thomas L. Clingman | 1853–1858 | North Carolina | Democratic | 1812–1897 |
| George Clinton Jr. | 1805–1809 | New York | Democratic-Republican | 1771–1809 |
| James G. Clinton | 1841–1845 | New York | Democratic | 1804–1849 |
| Roy Clippinger | 1945–1949 | Illinois | Republican | 1886–1962 |
| David Clopton | 1859–1861 | Alabama | Democratic | 1820–1892 |
| John Clopton | 1795–1799 1801–1816 | Virginia | Democratic-Republican | 1756–1816 |
| Wynne F. Clouse | 1921–1923 | Tennessee | Republican | 1883–1944 |
| Benjamin H. Clover | 1891–1893 | Kansas | Populist | 1837–1899 |
| William K. Clowney | 1833–1835 1837–1839 | South Carolina | Nullifier | 1797–1851 |
| E. Harold Cluett | 1937–1943 | New York | Republican | 1874–1954 |
| Thomas J. Clunie | 1889–1891 | California | Democratic | 1852–1903 |
| George Clymer | 1789–1791 | Pennsylvania | Pro-Administration | 1739–1813 |
| Hiester Clymer | 1873–1881 | Pennsylvania | Democratic | 1827–1884 |
| Merwin Coad | 1957–1963 | Iowa | Democratic | 1924–present |
| Charles Pearce Coady | 1913–1921 | Maryland | Democratic | 1868–1934 |
| Dan Coats | 1981–1989 | Indiana | Republican | 1943–present |
| Amasa Cobb | 1863–1871 | Wisconsin | Republican | 1823–1905 |
| Clinton L. Cobb | 1869–1875 | North Carolina | Republican | 1842–1879 |
| David Cobb | 1793–1795 | Massachusetts | Pro-Administration | 1748–1830 |
| George T. Cobb | 1861–1863 | New Jersey | Democratic | 1813–1870 |
| Howell Cobb | 1807–1812 | Georgia | Democratic-Republican | 1772–1818 |
| Howell Cobb | 1843–1851 1855–1857 | Georgia | Democratic | 1815–1868 |
| James E. Cobb | 1887–1896 | Alabama | Democratic | 1835–1903 |
| Seth W. Cobb | 1891–1897 | Missouri | Democratic | 1838–1909 |
| Stephen A. Cobb | 1873–1875 | Kansas | Republican | 1833–1878 |
| Thomas R. Cobb | 1877–1887 | Indiana | Democratic | 1828–1892 |
| Thomas W. Cobb | 1817–1821 1823–1824 | Georgia | Democratic-Republican | 1784–1830 |
| Williamson R. W. Cobb | 1847–1861 | Alabama | Democratic | 1807–1864 |
| Bill Cobey | 1985–1987 | North Carolina | Republican | 1939–present |
| Howard Coble | 1985–2015 | North Carolina | Republican | 1931–2015 |
| Frank P. Coburn | 1891–1893 | Wisconsin | Democratic | 1858–1932 |
| John Coburn | 1867–1875 | Indiana | Republican | 1825–1908 |
| Stephen Coburn | 1861 | Maine | Republican | 1817–1882 |
| Tom Coburn | 1995–2001 | Oklahoma | Republican | 1948–2020 |
| Alexander G. Cochran | 1875–1877 | Pennsylvania | Democratic | 1846–1928 |
| Charles F. Cochran | 1897–1905 | Missouri | Democratic | 1846–1906 |
| James Cochran | 1797–1799 | New York | Federalist | 1769–1848 |
| James Cochran | 1809–1813 | North Carolina | Democratic-Republican | c. 1767 – 1813 |
| John J. Cochran | 1926–1947 | Missouri | Democratic | 1880–1947 |
| Thad Cochran | 1973–1978 | Mississippi | Republican | 1937–2019 |
| Thomas Cunningham Cochran | 1927–1935 | Pennsylvania | Republican | 1877–1957 |
| Aaron Van Schaick Cochrane | 1897–1901 | New York | Republican | 1858–1943 |
| Clark B. Cochrane | 1857–1861 | New York | Republican | 1815–1867 |
| John Cochrane | 1857–1861 | New York | Democratic | 1813–1898 |
| John Alexander Cocke | 1819–1825 | Tennessee | Democratic-Republican | 1772–1854 |
| John Alexander Cocke | 1825–1827 | Tennessee | Democratic | 1772–1854 |
| William Michael Cocke | 1845–1849 | Tennessee | Whig | 1815–1896 |
| Joseph R. Cockerill | 1857–1859 | Ohio | Democratic | 1818–1875 |
| William Bourke Cockran | 1887–1889 1891–1895 1904–1909 1921–1923 | New York | Democratic | 1854–1923 |
| Jeremiah V. Cockrell | 1893–1897 | Texas | Democratic | 1832–1915 |
| William W. Cocks | 1905–1911 | New York | Republican | 1861–1932 |
| George P. Codd | 1921–1923 | Michigan | Republican | 1869–1927 |
| James H. Codding | 1895–1899 | Pennsylvania | Republican | 1849–1919 |
| Tony Coelho | 1979–1989 | California | Democratic | 1942–present |
| Harry B. Coffee | 1935–1943 | Nebraska | Democratic | 1890–1972 |
| John E. Coffee | 1833–1836 | Georgia | Democratic | 1782–1836 |
| John M. Coffee | 1937–1947 | Washington | Democratic | 1897–1983 |
| Henry A. Coffeen | 1893–1895 | Wyoming | Democratic | 1841–1912 |
| Robert L. Coffey | 1949 | Pennsylvania | Democratic | 1918–1949 |
| Charles D. Coffin | 1837–1839 | Ohio | Whig | 1805–1880 |
| Charles E. Coffin | 1894–1897 | Maryland | Republican | 1841–1912 |
| Frank M. Coffin | 1957–1961 | Maine | Democratic | 1919–2009 |
| Howard A. Coffin | 1947–1949 | Michigan | Republican | 1877–1956 |
| Peleg Coffin Jr. | 1793–1795 | Massachusetts | Pro-Administration | 1756–1805 |
| Thomas C. Coffin | 1933–1934 | Idaho | Democratic | 1887–1934 |
| Mike Coffman | 2009–2019 | Colorado | Republican | 1955–present |
| Alexander H. Coffroth | 1863–1865 1866 1879–1881 | Pennsylvania | Democratic | 1828–1906 |
| John M. Coghlan | 1871–1873 | California | Republican | 1835–1879 |
| William Cogswell | 1887–1895 | Massachusetts | Republican | 1838–1895 |
| Jeffery Cohelan | 1959–1971 | California | Democratic | 1914–1999 |
| William Cohen | 1973–1979 | Maine | Republican | 1940–present |
| William W. Cohen | 1927–1929 | New York | Democratic | 1874–1940 |
| Joshua Coit | 1793–1795 | Connecticut | Pro-Administration | 1758–1798 |
| Joshua Coit | 1795–1798 | Connecticut | Federalist | 1758–1798 |
| Richard Coke Jr. | 1829–1833 | Virginia | Democratic | 1790–1851 |
| William F. Colcock | 1849–1853 | South Carolina | Democratic | 1804–1889 |
| Cadwallader D. Colden | 1821–1823 | New York | Federalist | 1769–1834 |
| Charles J. Colden | 1933–1938 | California | Democratic | 1870–1938 |
| Albert M. Cole | 1945–1953 | Kansas | Republican | 1901–1994 |
| Cornelius Cole | 1863–1865 | California | Union Republican | 1822–1924 |
| Cyrenus Cole | 1921–1933 | Iowa | Republican | 1863–1939 |
| George Edward Cole | 1863–1865 | Washington | Democratic | 1826–1906 |
| Nathan Cole | 1877–1879 | Missouri | Republican | 1825–1904 |
| Orsamus Cole | 1849–1851 | Wisconsin | Whig | 1819–1903 |
| R. Clint Cole | 1919–1925 | Ohio | Republican | 1870–1957 |
| Ralph D. Cole | 1905–1911 | Ohio | Republican | 1873–1932 |
| W. Sterling Cole | 1935–1957 | New York | Republican | 1904–1987 |
| William Clay Cole | 1943–1949 1953–1955 | Missouri | Republican | 1897–1965 |
| William Hinson Cole | 1885–1886 | Maryland | Democratic | 1837–1886 |
| William Purington Cole Jr. | 1927–1929 1931–1942 | Maryland | Democratic | 1889–1957 |
| Tom Coleman | 1976–1993 | Missouri | Republican | 1943–present |
| Hamilton D. Coleman | 1889–1891 | Louisiana | Republican | 1845–1926 |
| Nicholas D. Coleman | 1829–1831 | Kentucky | Democratic | 1800–1874 |
| Ron Coleman | 1983–1997 | Texas | Democratic | 1941–present |
| William H. Coleman | 1915–1917 | Pennsylvania | Republican | 1871–1943 |
| Walpole G. Colerick | 1879–1883 | Indiana | Democratic | 1845–1911 |
| Isaac Coles | 1789–1791 1793–1795 | Virginia | Anti-Administration | 1747–1813 |
| Isaac Coles | 1795–1797 | Virginia | Democratic-Republican | 1747–1813 |
| Walter Coles | 1835–1845 | Virginia | Democratic | 1790–1857 |
| Schuyler Colfax | 1855–1869 | Indiana | Republican | 1823–1885 |
| Jacob Collamer | 1843–1849 | Vermont | Whig | 1791–1865 |
| Harold R. Collier | 1957–1975 | Illinois | Republican | 1915–2006 |
| James Collier | 1909–1933 | Mississippi | Democratic | 1872–1933 |
| John A. Collier | 1831–1833 | New York | Anti-Masonic | 1787–1873 |
| John F. Collin | 1845–1847 | New York | Democratic | 1802–1889 |
| Barbara-Rose Collins | 1991–1997 | Michigan | Democratic | 1939–2021 |
| Cardiss Collins | 1973–1997 | Illinois | Democratic | 1931–2013 |
| Chris Collins | 2013–2019 | New York | Republican | 1950–present |
| Doug Collins | 2013–2021 | Georgia | Republican | 1966–present |
| Ela Collins | 1823–1825 | New York | Democratic-Republican | 1786–1848 |
| Francis D. Collins | 1875–1879 | Pennsylvania | Democratic | 1841–1891 |
| George W. Collins | 1970–1972 | Illinois | Democratic | 1925–1972 |
| James M. Collins | 1968–1983 | Texas | Republican | 1916–1989 |
| Mac Collins | 1993–2005 | Georgia | Republican | 1944–2018 |
| Patrick Collins | 1883–1889 | Massachusetts | Democratic | 1844–1905 |
| Ross A. Collins | 1921–1935 1937–1943 | Mississippi | Democratic | 1880–1968 |
| Sam L. Collins | 1933–1937 | California | Republican | 1895–1965 |
| William Collins | 1847–1849 | New York | Democratic | 1818–1878 |
| William M. Colmer | 1933–1973 | Mississippi | Democratic | 1890–1980 |
| Antonio Colorado | 1992–1993 | Puerto Rico | Popular Democratic | 1939–present |
| Alfred H. Colquitt | 1853–1855 | Georgia | Democratic | 1824–1894 |
| Walter T. Colquitt | 1839–1840 | Georgia | Whig | 1799–1855 |
| Walter T. Colquitt | 1842–1843 | Georgia | Democratic | 1799–1855 |
| David G. Colson | 1895–1899 | Kentucky | Republican | 1861–1904 |
| Edward Colston | 1817–1819 | Virginia | Federalist | 1786–1852 |
| Don B. Colton | 1921–1933 | Utah | Republican | 1876–1952 |
| Larry Combest | 1985–2003 | Texas | Republican | 1945–present |
| George H. Combs Jr. | 1927–1929 | Missouri | Democratic | 1899–1977 |
| Jesse M. Combs | 1945–1953 | Texas | Democratic | 1889–1953 |
| Abram Comingo | 1871–1875 | Missouri | Democratic | 1820–1889 |
| Linus B. Comins | 1855–1857 | Massachusetts | American | 1817–1892 |
| Linus B. Comins | 1857–1859 | Massachusetts | Republican | 1817–1892 |
| Barnes Compton | 1885–1890 1891–1894 | Maryland | Democratic | 1830–1898 |
| Ranulf Compton | 1943–1945 | Connecticut | Republican | 1878–1974 |
| Barbara Comstock | 2015–2019 | Virginia | Republican | 1959–present |
| Charles C. Comstock | 1885–1887 | Michigan | Democratic | 1818–1900 |
| Daniel Webster Comstock | 1917 | Indiana | Republican | 1840–1917 |
| Oliver C. Comstock | 1813–1819 | New York | Democratic-Republican | 1780–1860 |
| Solomon Comstock | 1889–1891 | Minnesota | Republican | 1842–1933 |
| Barber Conable | 1965–1985 | New York | Republican | 1922–2003 |
| John Conard | 1813–1815 | Pennsylvania | Democratic-Republican | 1773–1857 |
| Mike Conaway | 2005–2021 | Texas | Republican | 1948–present |
| Lewis Condict | 1811–1817 1821–1825 | New Jersey | Democratic-Republican | 1772–1862 |
| Lewis Condict | 1825–1833 | New Jersey | National Republican | 1772–1862 |
| Gary Condit | 1989–2003 | California | Democratic | 1948–present |
| John Condit | 1799–1803 1819 | New Jersey | Democratic-Republican | 1755–1834 |
| Silas Condit | 1831–1833 | New Jersey | National Republican | 1778–1861 |
| Francis Condon | 1930–1935 | Rhode Island | Democratic | 1891–1965 |
| Robert Condon | 1953–1955 | California | Democratic | 1912–1976 |
| Edwin H. Conger | 1885–1890 | Iowa | Republican | 1843–1907 |
| Harmon S. Conger | 1847–1851 | New York | Whig | 1816–1882 |
| James L. Conger | 1851–1853 | Michigan | Whig | 1805–1876 |
| Omar D. Conger | 1869–1881 | Michigan | Republican | 1818–1898 |
| Alfred Conkling | 1821–1823 | New York | Democratic-Republican | 1789–1874 |
| Frederick A. Conkling | 1861–1863 | New York | Republican | 1816–1891 |
| Roscoe Conkling | 1859–1863 1865–1867 | New York | Republican | 1829–1888 |
| John Conlan | 1973–1977 | Arizona | Republican | 1930–2021 |
| Charles G. Conn | 1893–1895 | Indiana | Democratic | 1844–1931 |
| Tom Connally | 1917–1929 | Texas | Democratic | 1877–1963 |
| Charles R. Connell | 1921–1922 | Pennsylvania | Republican | 1864–1922 |
| Richard E. Connell | 1911–1912 | New York | Democratic | 1857–1912 |
| William Connell | 1897–1903 1904–1905 | Pennsylvania | Republican | 1827–1909 |
| William James Connell | 1889–1891 | Nebraska | Republican | 1846–1924 |
| John R. Connelly | 1913–1919 | Kansas | Democratic | 1870–1940 |
| James P. Conner | 1900–1909 | Iowa | Republican | 1851–1924 |
| John C. Conner | 1870–1873 | Texas | Democratic | 1842–1873 |
| Samuel S. Conner | 1815–1817 | Massachusetts | Democratic-Republican | c. 1783 – 1820 |
| Lawrence J. Connery | 1937–1941 | Massachusetts | Democratic | 1895–1941 |
| William P. Connery Jr. | 1923–1937 | Massachusetts | Democratic | 1888–1937 |
| Daniel W. Connolly | 1883–1885 | Pennsylvania | Democratic | 1847–1894 |
| James A. Connolly | 1895–1899 | Illinois | Republican | 1843–1914 |
| James J. Connolly | 1921–1935 | Pennsylvania | Republican | 1881–1952 |
| Maurice Connolly | 1913–1915 | Iowa | Democratic | 1877–1921 |
| Henry William Connor | 1821–1825 | North Carolina | Democratic-Republican | 1793–1866 |
| Henry William Connor | 1825–1841 | North Carolina | Democratic | 1793–1866 |
| William Sheldrick Conover | 1972–1973 | Pennsylvania | Republican | 1928–2022 |
| Charles Magill Conrad | 1849–1850 | Louisiana | Whig | 1804–1878 |
| Frederick Conrad | 1803–1807 | Pennsylvania | Democratic-Republican | 1759–1827 |
| Joseph A. Conry | 1901–1903 | Massachusetts | Democratic | 1868–1943 |
| Michael F. Conry | 1909–1917 | New York | Democratic | 1870–1917 |
| Albert Constable | 1845–1847 | Maryland | Democratic | 1805–1855 |
| Silvio O. Conte | 1959–1991 | Massachusetts | Republican | 1921–1991 |
| Benjamin Contee | 1789–1791 | Maryland | Anti-Administration | 1755–1815 |
| George L. Converse | 1879–1885 | Ohio | Democratic | 1827–1897 |
| Connie Conway | 2022–2023 | California | Republican | 1950–present |
| Henry W. Conway | 1823–1827 | Arkansas | None | 1793–1827 |
| Martin F. Conway | 1861–1863 | Kansas | Republican | 1827–1882 |
| John Conyers | 1965–2017 | Michigan | Democratic | 1929–2019 |
| Burton C. Cook | 1865–1871 | Illinois | Republican | 1819–1894 |
| Daniel Pope Cook | 1819–1825 | Illinois | Democratic-Republican | 1794–1827 |
| Daniel Pope Cook | 1825–1827 | Illinois | National Republican | 1794–1827 |
| George W. Cook | 1907–1909 | Colorado | Republican | 1851–1916 |
| Joel Cook | 1907–1910 | Pennsylvania | Republican | 1842–1910 |
| John C. Cook | 1883 1883–1885 | Iowa | Democratic | 1846–1920 |
| John Parsons Cook | 1853–1855 | Iowa | Whig | 1817–1872 |
| Merrill Cook | 1997–2001 | Utah | Republican | 1946–present |
| Orchard Cook | 1805–1811 | Massachusetts | Democratic-Republican | 1763–1819 |
| Paul Cook | 2013–2020 | California | Republican | 1943–present |
| Philip Cook | 1873–1883 | Georgia | Democratic | 1817–1894 |
| Robert E. Cook | 1959–1963 | Ohio | Democratic | 1920–1988 |
| Samuel A. Cook | 1895–1897 | Wisconsin | Republican | 1849–1918 |
| Samuel E. Cook | 1923–1925 | Indiana | Democratic | 1860–1946 |
| Zadock Cook | 1816–1819 | Georgia | Democratic-Republican | 1769–1863 |
| Bates Cooke | 1831–1833 | New York | Anti-Masonic | 1787–1841 |
| Edmund F. Cooke | 1929–1933 | New York | Republican | 1885–1967 |
| Edward D. Cooke | 1895–1897 | Illinois | Republican | 1849–1897 |
| Eleutheros Cooke | 1831–1833 | Ohio | National Republican | 1787–1864 |
| Thomas B. Cooke | 1811–1813 | New York | Democratic-Republican | 1778–1853 |
| John Cooksey | 1997–2003 | Louisiana | Republican | 1941–2022 |
| Harold D. Cooley | 1934–1966 | North Carolina | Democratic | 1897–1974 |
| Wes Cooley | 1995–1997 | Oregon | Republican | 1932–2015 |
| Frederick S. Coolidge | 1891–1893 | Massachusetts | Democratic | 1841–1906 |
| Frank Coombs | 1901–1903 | California | Republican | 1853–1934 |
| William J. Coombs | 1891–1895 | New York | Democratic | 1833–1922 |
| Sam Coon | 1953–1957 | Oregon | Republican | 1903–1980 |
| James Cooney | 1897–1903 | Missouri | Democratic | 1848–1904 |
| Allen F. Cooper | 1903–1911 | Pennsylvania | Republican | 1862–1917 |
| Charles Merian Cooper | 1893–1897 | Florida | Democratic | 1856–1923 |
| Edmund Cooper | 1866–1867 | Tennessee | Unionist | 1821–1911 |
| Edward Cooper | 1915–1919 | West Virginia | Republican | 1873–1928 |
| George B. Cooper | 1859–1860 | Michigan | Democratic | 1808–1866 |
| George W. Cooper | 1889–1895 | Indiana | Democratic | 1851–1899 |
| Henry A. Cooper | 1893–1919 1921–1931 | Wisconsin | Republican | 1850–1931 |
| James Cooper | 1839–1843 | Pennsylvania | Whig | 1810–1863 |
| Jere Cooper | 1929–1957 | Tennessee | Democratic | 1893–1957 |
| Jim Cooper | 1983–1995 2003–2023 | Tennessee | Democratic | 1954–present |
| John G. Cooper | 1915–1937 | Ohio | Republican | 1872–1955 |
| Mark A. Cooper | 1839–1841 | Georgia | Whig | 1800–1885 |
| Mark A. Cooper | 1842–1843 | Georgia | Democratic | 1800–1885 |
| Richard M. Cooper | 1829–1833 | New Jersey | National Republican | 1768–1843 |
| Samuel B. Cooper | 1893–1905 1907–1909 | Texas | Democratic | 1850–1918 |
| Thomas Cooper | 1813–1817 | Delaware | Federalist | 1764–1829 |
| Thomas Buchecker Cooper | 1861–1862 | Pennsylvania | Democratic | 1823–1862 |
| William Cooper | 1795–1797 1799–1801 | New York | Federalist | 1754–1809 |
| William C. Cooper | 1885–1891 | Ohio | Republican | 1832–1902 |
| William R. Cooper | 1839–1841 | New Jersey | Democratic | 1793–1856 |
| Oren S. Copeland | 1941–1943 | Nebraska | Republican | 1887–1958 |
| Ira C. Copley | 1911–1915 | Illinois | Republican | 1864–1947 |
| Ira C. Copley | 1915–1917 | Illinois | Progressive | 1864–1947 |
| Ira C. Copley | 1917–1923 | Illinois | Republican | 1864–1947 |
| Sam Coppersmith | 1993–1995 | Arizona | Democratic | 1955–present |
| Robert J. Corbett | 1939–1941 1945–1971 | Pennsylvania | Republican | 1905–1971 |
| Tom Corcoran | 1977–1984 | Illinois | Republican | 1939–present |
| Jorge Luis Córdova | 1969–1973 | Puerto Rico | New Progressive | 1907–1994 |
| Félix Córdova Dávila | 1917–1932 | Puerto Rico | Unionist | 1878–1938 |
| Stephen A. Corker | 1870–1871 | Georgia | Democratic | 1830–1879 |
| William Wellington Corlett | 1877–1879 | Wyoming | Democratic | 1842–1890 |
| Manuel S. Corley | 1868–1869 | South Carolina | Republican | 1823–1902 |
| John Blaisdell Corliss | 1895–1903 | Michigan | Republican | 1851–1929 |
| James C. Corman | 1961–1981 | California | Democratic | 1920–2000 |
| Robert John Cornell | 1975–1979 | Wisconsin | Democratic | 1919–2009 |
| Thomas Cornell | 1867–1869 1881–1883 | New York | Republican | 1814–1890 |
| Erastus Corning | 1857–1859 1861–1863 | New York | Democratic | 1794–1872 |
| Parker Corning | 1923–1937 | New York | Democratic | 1874–1943 |
| Johnston Cornish | 1893–1895 | New Jersey | Democratic | 1858–1920 |
| David L. Cornwell | 1977–1979 | Indiana | Democratic | 1945–2012 |
| Baltasar Corrada del Río | 1977–1985 | Puerto Rico | New Progressive | 1935–2018 |
| Franklin Corwin | 1873–1875 | Illinois | Republican | 1818–1879 |
| Moses Bledso Corwin | 1849–1851 1853–1855 | Ohio | Whig | 1790–1872 |
| Thomas Corwin | 1831–1833 | Ohio | National Republican | 1794–1865 |
| Thomas Corwin | 1833–1840 | Ohio | Whig | 1794–1865 |
| Thomas Corwin | 1859–1861 | Ohio | Republican | 1794–1865 |
| Jeremiah Cosden | 1821–1822 | Maryland | Democratic-Republican | 1768–1824 |
| John Cosgrove | 1883–1885 | Missouri | Democratic | 1839–1925 |
| Jerry Costello | 1988–2013 | Illinois | Democratic | 1949–present |
| John M. Costello | 1935–1945 | California | Democratic | 1903–1976 |
| Peter E. Costello | 1915–1921 | Pennsylvania | Republican | 1854–1935 |
| Ryan Costello | 2015–2019 | Pennsylvania | Republican | 1976–present |
| James S. Cothran | 1887–1891 | South Carolina | Democratic | 1830–1897 |
| William R. Cotter | 1971–1981 | Connecticut | Democratic | 1926–1981 |
| Joseph S. Cottman | 1851–1853 | Maryland | Independent Whig | 1803–1863 |
| Aylett R. Cotton | 1871–1875 | Iowa | Republican | 1826–1912 |
| Norris Cotton | 1947–1954 | New Hampshire | Republican | 1900–1989 |
| Tom Cotton | 2013–2015 | Arkansas | Republican | 1977–present |
| James L. F. Cottrell | 1846–1847 | Alabama | Democratic | 1808–1885 |
| Frederic Coudert Jr. | 1947–1959 | New York | Republican | 1898–1972 |
| Harry M. Coudrey | 1906–1911 | Missouri | Republican | 1867–1930 |
| Clarence D. Coughlin | 1921–1923 | Pennsylvania | Republican | 1883–1946 |
| Lawrence Coughlin | 1969–1993 | Pennsylvania | Republican | 1929–2001 |
| Richard Coulter | 1827–1835 | Pennsylvania | Democratic | 1788–1852 |
| Jim Courter | 1979–1991 | New Jersey | Republican | 1941–present |
| W. Wirt Courtney | 1939–1949 | Tennessee | Democratic | 1889–1961 |
| Robert G. Cousins | 1893–1909 | Iowa | Republican | 1859–1933 |
| James W. Covert | 1877–1881 1889–1895 | New York | Democratic | 1842–1910 |
| George W. Covington | 1881–1885 | Maryland | Democratic | 1838–1911 |
| J. Harry Covington | 1909–1914 | Maryland | Democratic | 1870–1942 |
| Leonard Covington | 1805–1807 | Maryland | Democratic-Republican | 1768–1813 |
| John Covode | 1855–1857 | Pennsylvania | Oppositionist | 1808–1871 |
| John Covode | 1857–1863 1867–1869 1870–1871 | Pennsylvania | Republican | 1808–1871 |
| Jacob Pitzer Cowan | 1875–1877 | Ohio | Democratic | 1823–1895 |
| Benjamin S. Cowen | 1841–1843 | Ohio | Whig | 1793–1869 |
| John K. Cowen | 1895–1897 | Maryland | Democratic | 1844–1904 |
| William Cowger | 1967–1971 | Kentucky | Republican | 1922–1971 |
| Calvin Cowgill | 1879–1881 | Indiana | Republican | 1819–1903 |
| William S. Cowherd | 1897–1905 | Missouri | Democratic | 1860–1915 |
| Charles H. Cowles | 1909–1911 | North Carolina | Republican | 1875–1957 |
| George W. Cowles | 1869–1871 | New York | Republican | 1823–1901 |
| Henry B. Cowles | 1829–1831 | New York | National Republican | 1798–1873 |
| William H. H. Cowles | 1885–1893 | North Carolina | Democratic | 1840–1901 |
| Christopher Cox | 1989–2005 | California | Republican | 1952–present |
| E. Eugene Cox | 1925–1952 | Georgia | Democratic | 1880–1952 |
| Isaac N. Cox | 1891–1893 | New York | Democratic | 1846–1916 |
| Jacob Dolson Cox | 1877–1879 | Ohio | Republican | 1828–1900 |
| James Cox | 1809–1810 | New Jersey | Democratic-Republican | 1753–1810 |
| James M. Cox | 1909–1913 | Ohio | Democratic | 1870–1957 |
| John W. Cox Jr. | 1991–1993 | Illinois | Democratic | 1947–present |
| Leander Cox | 1853–1855 | Kentucky | Whig | 1812–1865 |
| Leander Cox | 1855–1857 | Kentucky | American | 1812–1865 |
| Nicholas N. Cox | 1891–1901 | Tennessee | Democratic | 1837–1912 |
| Samuel S. Cox | 1857–1865 | Ohio | Democratic | 1824–1889 |
| Samuel S. Cox | 1869–1873 1873–1885 1886–1889 | New York | Democratic | 1824–1889 |
| TJ Cox | 2019–2021 | California | Democratic | 1963–present |
| William E. Cox | 1907–1919 | Indiana | Democratic | 1861–1942 |
| William Ruffin Cox | 1881–1887 | North Carolina | Democratic | 1831/2–1919 |
| William Coxe Jr. | 1813–1815 | New Jersey | Federalist | 1762–1831 |
| William R. Coyle | 1925–1927 1929–1933 | Pennsylvania | Republican | 1878–1962 |
| James K. Coyne III | 1981–1983 | Pennsylvania | Republican | 1946–present |
| William J. Coyne | 1981–2003 | Pennsylvania | Democratic | 1936–2013 |
| George W. Crabb | 1838–1841 | Alabama | Whig | 1804–1846 |
| Jeremiah Crabb | 1795–1796 | Maryland | Federalist | 1760–1800 |
| John D. Craddock | 1929–1931 | Kentucky | Republican | 1881–1942 |
| John Cradlebaugh | 1861–1863 | Nevada | Independent | 1819–1872 |
| Samuel C. Crafts | 1817–1825 | Vermont | Democratic-Republican | 1768–1853 |
| Aaron H. Cragin | 1855–1857 | New Hampshire | American | 1821–1898 |
| Aaron H. Cragin | 1857–1859 | New Hampshire | Republican | 1821–1898 |
| Thomas S. Crago | 1911–1913 1915–1921 1921–1923 | Pennsylvania | Republican | 1866–1925 |
| Alexander Kerr Craig | 1892 | Pennsylvania | Democratic | 1828–1892 |
| George Henry Craig | 1885 | Alabama | Republican | 1845–1923 |
| Hector Craig | 1823–1825 | New York | Democratic-Republican | 1775–1842 |
| Hector Craig | 1829–1830 | New York | Democratic | 1775–1842 |
| James Craig | 1857–1861 | Missouri | Democratic | 1818–1888 |
| Larry Craig | 1981–1991 | Idaho | Republican | 1945–present |
| Robert Craig | 1829–1833 1835–1841 | Virginia | Democratic | 1792–1852 |
| Samuel Alfred Craig | 1889–1891 | Pennsylvania | Republican | 1839–1920 |
| William Benjamin Craig | 1907–1911 | Alabama | Democratic | 1877–1925 |
| Francis Burton Craige | 1853–1861 | North Carolina | Democratic | 1811–1875 |
| William Craik | 1796–1801 | Maryland | Federalist | 1761–1814 |
| Joe Crail | 1927–1933 | California | Republican | 1877–1938 |
| William H. Crain | 1885–1896 | Texas | Democratic | 1848–1896 |
| Nathaniel N. Craley Jr. | 1965–1967 | Pennsylvania | Democratic | 1927–2006 |
| John Cramer | 1833–1837 | New York | Democratic | 1779–1870 |
| Kevin Cramer | 2013–2019 | North Dakota | Republican | 1961–present |
| Bud Cramer | 1991–2009 | Alabama | Democratic | 1947–present |
| William C. Cramer | 1955–1971 | Florida | Republican | 1922–2003 |
| Louis C. Cramton | 1913–1931 | Michigan | Republican | 1875–1966 |
| Dan Crane | 1979–1985 | Illinois | Republican | 1936–2019 |
| Joseph H. Crane | 1829–1837 | Ohio | National Republican | 1782–1851 |
| Phil Crane | 1969–2005 | Illinois | Republican | 1930–2014 |
| John W. Cranford | 1897–1899 | Texas | Democratic | 1862–1899 |
| Henry Y. Cranston | 1843–1845 | Rhode Island | Law and Order | 1789–1864 |
| Henry Y. Cranston | 1845–1847 | Rhode Island | Whig | 1789–1864 |
| Robert B. Cranston | 1837–1843 1847–1849 | Rhode Island | Whig | 1791–1873 |
| Mike Crapo | 1993–1999 | Idaho | Republican | 1951–present |
| William W. Crapo | 1875–1883 | Massachusetts | Republican | 1830–1926 |
| Isaac E. Crary | 1837–1841 | Michigan | Democratic | 1804–1854 |
| Chip Cravaack | 2011–2013 | Minnesota | Republican | 1959–present |
| James A. Cravens | 1861–1865 | Indiana | Democratic | 1818–1893 |
| James H. Cravens | 1841–1843 | Indiana | Whig | 1802–1876 |
| Jordan E. Cravens | 1877–1883 | Arkansas | Democratic | 1830–1914 |
| William B. Cravens | 1907–1913 1933–1939 | Arkansas | Democratic | 1872–1939 |
| William Fadjo Cravens | 1939–1949 | Arkansas | Democratic | 1899–1974 |
| Fred L. Crawford | 1935–1953 | Michigan | Republican | 1888–1957 |
| George W. Crawford | 1843 | Georgia | Whig | 1798–1872 |
| Joel Crawford | 1817–1821 | Georgia | Democratic-Republican | 1783–1858 |
| Martin J. Crawford | 1855–1861 | Georgia | Democratic | 1820–1883 |
| Thomas Hartley Crawford | 1829–1833 | Pennsylvania | Democratic | 1786–1863 |
| William Crawford | 1809–1817 | Pennsylvania | Democratic-Republican | 1760–1823 |
| William T. Crawford | 1891–1895 1899–1900 1907–1909 | North Carolina | Democratic | 1856–1913 |
| Charles E. Creager | 1909–1911 | Oklahoma | Republican | 1873–1964 |
| Edward W. Creal | 1935–1943 | Kentucky | Democratic | 1883–1943 |
| Thomas J. Creamer | 1873–1875 1901–1903 | New York | Democratic | 1843–1914 |
| John M. Crebs | 1869–1873 | Illinois | Democratic | 1830–1890 |
| John V. Creely | 1871–1873 | Pennsylvania | Independent Republican | 1839–1900 |
| William Creighton Jr. | 1813–1817 | Ohio | Democratic-Republican | 1778–1851 |
| William Creighton Jr. | 1827–1833 | Ohio | National Republican | 1778–1851 |
| Frank Cremeans | 1995–1997 | Ohio | Republican | 1943–2003 |
| Ander Crenshaw | 2001–2017 | Florida | Republican | 1944–present |
| John Creswell | 1863–1865 | Maryland | Republican | 1828–1891 |
| Albert W. Cretella | 1953–1959 | Connecticut | Republican | 1897–1979 |
| John W. Crisfield | 1847–1849 | Maryland | Whig | 1806–1897 |
| John W. Crisfield | 1861–1863 | Maryland | Unionist | 1806–1897 |
| Charles F. Crisp | 1883–1896 | Georgia | Democratic | 1845–1896 |
| Charles R. Crisp | 1896–1897 1913–1932 | Georgia | Democratic | 1870–1937 |
| Charlie Crist | 2017–2022 | Florida | Democratic | 1956–present |
| Henry Crist | 1809–1811 | Kentucky | Democratic-Republican | 1764–1844 |
| John Critcher | 1871–1873 | Virginia | Democratic | 1820–1901 |
| John J. Crittenden | 1861–1863 | Kentucky | Unionist | 1787–1863 |
| Thomas Theodore Crittenden | 1873–1875 1877–1879 | Missouri | Democratic | 1832–1909 |
| Mark Critz | 2010–2013 | Pennsylvania | Democratic | 1962–present |
| Henry Crocheron | 1815–1817 | New York | Democratic-Republican | 1772–1819 |
| Jacob Crocheron | 1829–1831 | New York | Democratic | 1774–1849 |
| Alvah Crocker | 1872–1874 | Massachusetts | Republican | 1801–1874 |
| Samuel L. Crocker | 1853–1855 | Massachusetts | Whig | 1804–1883 |
| Davy Crockett | 1827–1829 | Tennessee | Democratic | 1786–1836 |
| Davy Crockett | 1829–1831 1833–1835 | Tennessee | National Republican | 1786–1836 |
| George Crockett Jr. | 1980–1991 | Michigan | Democratic | 1909–1997 |
| John Wesley Crockett | 1837–1841 | Tennessee | Whig | 1807–1852 |
| George W. Croft | 1903–1904 | South Carolina | Democratic | 1846–1904 |
| Theodore G. Croft | 1904–1905 | South Carolina | Democratic | 1874–1920 |
| William M. Croll | 1923–1925 | Pennsylvania | Democratic | 1866–1929 |
| George W. Cromer | 1899–1907 | Indiana | Republican | 1856–1936 |
| Paul W. Cronin | 1973–1975 | Massachusetts | Republican | 1938–1997 |
| Thurman C. Crook | 1949–1951 | Indiana | Democratic | 1891–1981 |
| Philip S. Crooke | 1873–1875 | New York | Republican | 1810–1881 |
| Charles N. Crosby | 1933–1939 | Pennsylvania | Democratic | 1876–1951 |
| John Crawford Crosby | 1891–1893 | Massachusetts | Democratic | 1859–1943 |
| Edward Cross | 1839–1845 | Arkansas | Democratic | 1798–1887 |
| Oliver H. Cross | 1929–1937 | Texas | Democratic | 1868–1960 |
| Robert Crosser | 1913–1919 1923–1955 | Ohio | Democratic | 1874–1957 |
| Edward Crossland | 1871–1875 | Kentucky | Democratic | 1827–1881 |
| Edward Crouch | 1813–1815 | Pennsylvania | Democratic-Republican | 1764–1827 |
| Lorenzo Crounse | 1873–1877 | Nebraska | Republican | 1834–1909 |
| George W. Crouse | 1887–1889 | Ohio | Republican | 1832–1912 |
| Charles A. Crow | 1909–1911 | Missouri | Republican | 1873–1938 |
| William J. Crow | 1947–1949 | Pennsylvania | Republican | 1902–1974 |
| Eugene B. Crowe | 1931–1941 | Indiana | Democratic | 1878–1970 |
| John Crowell | 1818–1819 1819–1821 | Alabama | Democratic-Republican | 1780–1846 |
| John Crowell | 1847–1851 | Ohio | Whig | 1801–1883 |
| Joe Crowley | 1999–2019 | New York | Democratic | 1962–present |
| Joseph B. Crowley | 1899–1905 | Illinois | Democratic | 1858–1931 |
| Miles Crowley | 1895–1897 | Texas | Democratic | 1859–1921 |
| Richard Crowley | 1879–1883 | New York | Republican | 1836–1908 |
| Benjamin W. Crowninshield | 1823–1825 | Massachusetts | Democratic-Republican | 1772–1851 |
| Benjamin W. Crowninshield | 1825–1831 | Massachusetts | National Republican | 1772–1851 |
| Jacob Crowninshield | 1803–1808 | Massachusetts | Democratic-Republican | 1770–1808 |
| Frank Crowther | 1919–1943 | New York | Republican | 1870–1955 |
| George C. Crowther | 1895–1897 | Missouri | Republican | 1849–1914 |
| Thomas Croxton | 1885–1887 | Virginia | Democratic | 1822–1903 |
| John Hervey Crozier | 1845–1849 | Tennessee | Whig | 1812–1889 |
| Josiah Crudup | 1821–1823 | North Carolina | Democratic-Republican | 1791–1872 |
| Daniel Cruger | 1817–1819 | New York | Democratic-Republican | 1780–1843 |
| E. H. Crump | 1931–1935 | Tennessee | Democratic | 1874–1954 |
| George W. Crump | 1826–1827 | Virginia | Democratic | 1786–1848 |
| Rousseau O. Crump | 1895–1901 | Michigan | Republican | 1843–1901 |
| Edgar D. Crumpacker | 1897–1913 | Indiana | Republican | 1851–1920 |
| Maurice E. Crumpacker | 1925–1927 | Oregon | Republican | 1886–1927 |
| Shepard J. Crumpacker Jr. | 1951–1957 | Indiana | Republican | 1917–1986 |
| William Crutchfield | 1873–1875 | Tennessee | Republican | 1824–1890 |
| Barbara Cubin | 1995–2009 | Wyoming | Republican | 1946–present |
| David B. Culberson | 1875–1897 | Texas | Democratic | 1830–1900 |
| John Culberson | 2001–2019 | Texas | Republican | 1956–present |
| William Constantine Culbertson | 1889–1891 | Pennsylvania | Republican | 1825–1906 |
| William Wirt Culbertson | 1883–1885 | Kentucky | Republican | 1835–1911 |
| Thomas Culbreth | 1817–1821 | Maryland | Democratic-Republican | 1786–1843 |
| Francis D. Culkin | 1928–1943 | New York | Republican | 1874–1943 |
| Elisha D. Cullen | 1855–1857 | Delaware | American | 1799–1862 |
| Thomas H. Cullen | 1919–1944 | New York | Democratic | 1868–1944 |
| William Cullen | 1881–1885 | Illinois | Republican | 1826–1914 |
| Alvan Cullom | 1843–1847 | Tennessee | Democratic | 1797–1877 |
| Shelby M. Cullom | 1865–1871 | Illinois | Republican | 1829–1914 |
| William Cullom | 1851–1855 | Tennessee | Whig | 1810–1896 |
| William A. Cullop | 1909–1917 | Indiana | Democratic | 1853–1927 |
| John Culpepper | 1807–1808 1808–1809 1813–1817 1819–1821 1823–1825 | North Carolina | Federalist | 1761–1841 |
| John Culpepper | 1827–1829 | North Carolina | National Republican | 1761–1841 |
| Charles Vernon Culver | 1865–1867 | Pennsylvania | Republican | 1830–1909 |
| Erastus D. Culver | 1845–1847 | New York | Whig | 1803–1889 |
| John Culver | 1965–1975 | Iowa | Democratic | 1932–2018 |
| William Cumback | 1855–1857 | Indiana | Oppositionist | 1829–1905 |
| Thomas W. Cumming | 1853–1855 | New York | Democratic | ????–1855 |
| Amos J. Cummings | 1887–1889 1889–1894 1895–1902 | New York | Democratic | 1838–1902 |
| Elijah Cummings | 1996–2019 | Maryland | Democratic | 1951–2019 |
| Fred N. Cummings | 1933–1941 | Colorado | Democratic | 1864–1952 |
| Henry J. B. Cummings | 1877–1879 | Iowa | Republican | 1831–1909 |
| Herbert W. Cummings | 1923–1925 | Pennsylvania | Democratic | 1873–1956 |
| John D. Cummins | 1845–1849 | Ohio | Democratic | 1791–1849 |
| Francis A. Cunningham | 1845–1847 | Ohio | Democratic | 1804–1864 |
| Glenn Cunningham | 1957–1971 | Nebraska | Republican | 1912–2003 |
| Joe Cunningham | 2019–2021 | California | Democratic | 1982–present |
| John E. Cunningham | 1977–1979 | Washington | Republican | 1931–present |
| Paul Cunningham | 1941–1959 | Iowa | Republican | 1890–1961 |
| Duke Cunningham | 1991–2005 | California | Republican | 1941–present |
| Carlos Curbelo | 2015–2019 | Florida | Republican | 1980–present |
| Edward W. Curley | 1935–1940 | New York | Democratic | 1873–1940 |
| James Michael Curley | 1911–1914 1943–1947 | Massachusetts | Democratic | 1874–1958 |
| William P. Curlin Jr. | 1971–1973 | Kentucky | Democratic | 1933–2022 |
| Gilbert A. Currie | 1917–1921 | Michigan | Republican | 1882–1960 |
| Frank D. Currier | 1901–1913 | New Hampshire | Republican | 1853–1921 |
| Charles F. Curry | 1913–1930 | California | Republican | 1858–1930 |
| Charles F. Curry Jr. | 1931–1933 | California | Republican | 1893–1972 |
| George Curry | 1912–1913 | New Mexico | Republican | 1861–1947 |
| Jabez L. M. Curry | 1857–1861 | Alabama | Democratic | 1825–1903 |
| David Curson | 2012–2013 | Michigan | Democratic | 1948–2024 |
| Andrew Gregg Curtin | 1881–1887 | Pennsylvania | Democratic | 1817–1894 |
| Willard S. Curtin | 1957–1967 | Pennsylvania | Republican | 1905–1996 |
| Carl Curtis | 1939–1954 | Nebraska | Republican | 1905–2000 |
| Carlton B. Curtis | 1851–1855 | Pennsylvania | Democratic | 1811–1883 |
| Carlton B. Curtis | 1873–1875 | Pennsylvania | Republican | 1811–1883 |
| Charles Curtis | 1893–1907 | Kansas | Republican | 1860–1936 |
| Edward Curtis | 1837–1841 | New York | Whig | 1801–1856 |
| George M. Curtis | 1895–1899 | Iowa | Republican | 1844–1921 |
| John Curtis | 2017–2025 | Utah | Republican | 1960–present |
| Laurence Curtis | 1953–1963 | Massachusetts | Republican | 1893–1989 |
| Newton Martin Curtis | 1891–1897 | New York | Republican | 1835–1910 |
| Samuel Ryan Curtis | 1857–1861 | Iowa | Republican | 1805–1866 |
| Thomas B. Curtis | 1951–1969 | Missouri | Republican | 1911–1993 |
| Thomas Cusack | 1899–1901 | Illinois | Democratic | 1858–1926 |
| Caleb Cushing | 1835–1837 | Massachusetts | National Republican | 1800–1879 |
| Caleb Cushing | 1837–1843 | Massachusetts | Whig | 1800–1879 |
| Francis W. Cushman | 1899–1909 | Washington | Republican | 1867–1909 |
| John P. Cushman | 1817–1819 | New York | Federalist | 1784–1848 |
| Joshua Cushman | 1819–1821 | Massachusetts | Democratic-Republican | 1761–1834 |
| Joshua Cushman | 1821–1825 | Maine | Democratic-Republican | 1761–1834 |
| Samuel Cushman | 1835–1839 | New Hampshire | Democratic | 1783–1851 |
| Byron M. Cutcheon | 1883–1891 | Michigan | Republican | 1836–1908 |
| Alfred Cuthbert | 1813–1816 1821–1825 | Georgia | Democratic-Republican | 1785–1856 |
| Alfred Cuthbert | 1825–1827 | Georgia | Democratic | 1785–1856 |
| John A. Cuthbert | 1819–1821 | Georgia | Democratic-Republican | 1788–1881 |
| Augustus W. Cutler | 1875–1879 | New Jersey | Democratic | 1827–1897 |
| Manasseh Cutler | 1801–1805 | Massachusetts | Federalist | 1742–1823 |
| William P. Cutler | 1861–1863 | Ohio | Republican | 1812–1889 |
| Francis B. Cutting | 1853–1855 | New York | Democratic | 1804–1870 |
| John T. Cutting | 1891–1893 | California | Republican | 1844–1911 |
| Marsena E. Cutts | 1881–1883 1883 | Iowa | Republican | 1833–1883 |
| Richard Cutts | 1801–1813 | Massachusetts | Democratic-Republican | 1771–1845 |