# List of Pi Tau Sigma chapters

Pi Tau Sigma is an international honor society for mechanical engineering. It was established in 1915 at the University of Illinois. In the following chapter list, active chapters are indicated in bold and inactive chapters and institutions are in italics.
| Chapter | Charter date | Institution | Location | Status |
| Illinois Alpha | March 16, 1915 | University of Illinois Urbana-Champaign | Urbana, Illinois | Active |
| Wisconsin Alpha | March 12, 1916 | University of Wisconsin–Madison | Madison, Wisconsin | Active |
| Purdue Beta | May 13, 1922 | Purdue University | West Lafayette, Indiana | Active |
| Minnesota Gamma | May 16, 1922 | University of Minnesota | Minneapolis, Minnesota | Active |
| Illinois Tech Delta | December 22, 1924 | Illinois Institute of Technology | Chicago, Illinois | Inactive |
| Missouri Epsilon | May 24, 1925 | University of Missouri | Columbia, Missouri | Active |
| Penn State Zeta | December 11, 1925 | Pennsylvania State University | University Park, Pennsylvania | Active |
| Cincinnati Eta | May 22, 1926 | University of Cincinnati | Cincinnati, Ohio | Active |
| Lehigh Theta | December 5, 1927 | Lehigh University | Bethlehem, Pennsylvania | Active |
| Carnegie Iota | May 20, 1930 | Carnegie Mellon University | Pittsburgh, Pennsylvania | Active |
| Texas Kappa | April 18, 1931 | University of Texas at Austin | Austin, Texas | Active |
| Oklahoma State Lambda | April 20, 1931 | Oklahoma State University | Stillwater, Oklahoma | Active |
| Colorado Mu | May 21, 1932 | University of Colorado Boulder | Boulder, Colorado | Active |
| Cornell Pi Tau | November 29, 1932 | Cornell University | Ithaca, New York | Active |
| Georgia Tech Nu | November 29, 1932 | Georgia Tech | Atlanta, Georgia | Active |
| Drexel Xi | June 7, 1933 | Drexel University | Philadelphia, Pennsylvania | Active |
| Iowa Omicron | November 15, 1935 | University of Iowa | Iowa City, Iowa | Active |
| Kansas Psi | November 15, 1935 | University of Kansas | Lawrence, Kansas | Active |
| Nebraska Pi | December 10, 1938 | University of Nebraska–Lincoln | Lincoln, Nebraska | Active |
| Kansas State Rho | May 20, 1939 | Kansas State University | Manhattan, Kansas | Active |
| Oklahoma Sigma | April 12, 1940 | University of Oklahoma | Norman, Oklahoma | Active |
| Pittsburgh Tau | April 22, 1940 | University of Pittsburgh | Pittsburgh, Pennsylvania | Active |
| Virginia Tech Upsilon | April 24, 1940 | Virginia Tech | Blacksburg, Virginia | Active |
| Rensselaer Phi | April 26, 1940 | Rensselaer Polytechnic Institute | Troy, New York | Active |
| Auburn Chi | December 7, 1940 | Auburn University | Auburn, Alabama | Active |
| Detroit Pi Eta | December 7, 1940 | University of Detroit Mercy | Detroit, Michigan | Active |
| Massachusetts Phi Theta | December 7, 1940 | University of Massachusetts Amherst | Amherst, Massachusetts | Active |
| Oregon State Omega | April 21, 1941 | Oregon State University | Corvallis, Oregon | Active |
| NC State Pi Alpha | March 27, 1942 | North Carolina State University | Raleigh, North Carolina | Active |
| CCNY Pi Beta | March 28, 1942 | City College of New York | New York City, New York | Inactive |
| West Virginia Pi Gamma | March 31, 1942 | West Virginia University | Morgantown, West Virginia | Active |
| Iowa State Pi Epsilon | November 12, 1942 | Iowa State University | Ames, Iowa | Active |
| Marquette Pi Delta | November 22, 1942 | Marquette University | Milwaukee, Wisconsin | Active |
| NYU Pi Zeta | January 24, 1943 | New York University | New York City, New York | Active |
| Northwestern Pi Theta | May 14, 1943 | Northwestern University | Evanston, Illinois | Active |
| Duke Pi Iota | May 13, 1944 | Duke University | Durham, North Carolina | Active |
| Kentucky Pi Lambda | May 24, 1947 | University of Kentucky | Lexington, Kentucky | Active |
| MIT Pi Kappa | May 29, 1947 | Massachusetts Institute of Technology | Cambridge, Massachusetts | Active |
| Syracuse Pi Nu | April 30, 1948 | Syracuse University | Syracuse, New York | Active |
| Ohio State Pi Mu | May 7, 1948 | Ohio State University | Columbus, Ohio | Active |
| Utah Pi Xi | May 14, 1948 | University of Utah | Salt Lake City, Utah | Active |
| Alabama Pi Omicron | May 14, 1948 | University of Alabama | Tuscaloosa, Alabama | Active |
| New York Poly Pi Pi | May 20, 1948 | Brooklyn Collegiate and Polytechnic Institute New York University Tandon School of Engineering | Brooklyn, New York | Active |
| Michigan Pi Rho | October 22, 1948 | University of Michigan | Ann Arbor, Michigan | Active |
| New Mexico Pi Sigma | November 29, 1948 | University of New Mexico | Albuquerque, New Mexico | Active |
| NDSU Pi Upsilon | December 13, 1948 | North Dakota State University | Fargo, North Dakota | Active |
| Johns Hopkins Tau Alpha | March 23, 1949 | Johns Hopkins University | Baltimore, Maryland | Active |
| Washington Pi Chi | May 6, 1949 | Washington University in St. Louis | St. Louis, Missouri | Active |
| USC Tau Beta | May 13, 1949 | University of Southern California | Los Angeles, California | Active |
| California Pi Omega | May 14, 1949 | University of California, Berkeley | Berkeley, California | Active |
| Cooper Union Pi Phi | May 21, 1949 | Cooper Union | New York City, New York | Active |
| Connecticut Pi Psi | May 21, 1949 | University of Connecticut | Storrs, Connecticut | Active |
| Tennessee Tau Eta | April 24, 1950 | University of Tennessee | Knoxville, Tennessee | Active |
| New Mexico Tau Delta | April 13, 1950 | New Mexico State University | Las Cruces, New Mexico | Active |
| MSU Tau Epsilon | April 27, 1950 | Michigan State University | East Lansing, Michigan | Active |
| Clarkson Tau Gamma | May 19, 1950 | Clarkson University | Potsdam, New York | Active |
| LSU Tau Zeta | April 20, 1951 | Louisiana State University | Baton Rouge, Louisiana | Active |
| NJIT Tau Theta | May 25, 1951 | New Jersey Institute of Technology | Newark, New Jersey | Active |
| Rutgers Tau Iota | March 5, 1952 | Rutgers University–New Brunswick | Piscataway, New Jersey | Active |
| Northeastern Tau Kappa | April 12, 1952 | Northeastern University | Boston, Massachusetts | Active |
| Alpha Omega | 1954 | Chapter-At-Large | | Active |
| Missouri Tau Lambda | April 16, 1955 | Missouri University of Science and Technology | Rolla, Missouri | Active |
| Maryland Tau Mu | April 14, 1956 | University of Maryland, College Park | College Park, Maryland | Active |
| Mississippi State Tau Nu | April 8, 1957 | Mississippi State University | Mississippi State, Mississippi | Active |
| Louisiana Tech Tau Xi | April 23, 1957 | Louisiana Tech University | Ruston, Louisiana | Active |
| Pratt Tau Omicron | April 9, 1958 | Pratt Institute | Brooklyn, New York | Active |
| Villanova Tau Pi | April 10, 1958 | Villanova University | Villanova, Pennsylvania | Active |
| Montana State Tau Rho | May 12, 1958 | Montana State University | Bozeman, Montana | Active |
| SMU Tau Sigma | May 17, 1958 | Southern Methodist University | Dallas, Texas | Active |
| WPI Tau Tau | March 8, 1959 | Worcester Polytechnic Institute | Worcester, Massachusetts | Active |
| Arkansas Tau Upsilon | May 8, 1959 | University of Arkansas | Fayetteville, Arkansas | Active |
| Wayne State Tau Phi | May 20, 1960 | Wayne State University | Detroit, Michigan | Inactive |
| South Dakota State Tau Chi | March 6, 1961 | South Dakota State University | Brookings, South Dakota | Active |
| Colorado State Tau Psi | March 8, 1961 | Colorado State University | Fort Collins, Colorado | Active |
| Bradley Tau Omega | May 11, 1961 | Bradley University | Peoria, Illinois | Active |
| UL Lafayette Sigma Alpha | May 13, 1961 | University of Louisiana at Lafayette | Lafayette, Louisiana | Active |
| Notre Dame Sigma Beta | March 24, 1963 | University of Notre Dame | Notre Dame, Indiana | Active |
| Arizona State Sigma Gamma | April 25, 1964 | Arizona State University | Tempe, Arizona | Active |
| Texas A&M Sigma Delta | May 21, 1964 | Texas A&M University | College Station, Texas | Active |
| Texas Tech Sigma Epsilon | April 15, 1966 | Texas Tech University | Lubbock, Texas | Active |
| Houston Sigma Zeta | April 16, 1966 | University of Houston | Houston, Texas | Active |
| California Sigma Eta | May 13, 1966 | California State University, Long Beach | Long Beach, California | Active |
| San Diego State Sigma Theta | May 14, 1966 | San Diego State University | San Diego, California | Inactive |
| Michigan Tech Sigma Iota | April 1, 1967 | Michigan Technological University | Houghton, Michigan | Active |
| Cal State LA Sigma Kappa | February 15, 1968 | California State University, Los Angeles | Los Angeles, California | Active |
| Rose-Hulman Sigma Lambda | February 21, 1968 | Rose–Hulman Institute of Technology | Terre Haute, Indiana | Inactive |
| Pennsylvania Sigma Mu | April 21, 1968 | University of Pennsylvania | Philadelphia, Pennsylvania | Active |
| Tennessee Sigma Nu | May 11, 1968 | Tennessee Tech | Cookeville, Tennessee | Active |
| Lamar Sigma Xi | May 17, 1968 | Lamar University | Beaumont, Texas | Active |
| Florida Sigma Omicron | May 25, 1968 | University of Florida | Gainesville, Florida | Active |
| Hawaii Sigma Pi | January 20, 1969 | University of Hawaiʻi at Mānoa | Honolulu, Hawaii | Active |
| Texas Sigma Rho | May 16, 1969 | University of Texas at Arlington | Arlington, Texas | Active |
| WSU Sigma Sigma | May 17, 1969 | Wichita State University | Wichita, Kansas | Active |
| Manhattan Sigma Tau | September 12, 1969 | Manhattan University | Riverdale, Bronx, New York | Active |
| Miami Sigma Upsilon | January 22, 1970 | University of Miami | Coral Gables, Florida | Active |
| Rhode Island Sigma Phi | May 13, 1970 | University of Rhode Island | Kingston, Rhode Island | Active |
| Tulane Sigma Chi | May 15, 1970 | Tulane University | New Orleans, Louisiana | Inactive |
| Tuskegee Sigma Psi | December 7, 1970 | Tuskegee University | Tuskegee, Alabama | Active |
| Texas Delta Gamma | Spring 1971 | University of Texas at El Paso | El Paso, Texas | Active |
| Lafayette Sigma Omega | April 20, 1971 | Lafayette College | Easton, Pennsylvania | Inactive |
| Vanderbilt Delta Alpha | April 22, 1971 | Vanderbilt University | Nashville, Tennessee | Active |
| Cal Poly Pomona Delta Beta | May 10, 1971 | California State Polytechnic University, Pomona | Pomona, California | Active |
| Tri-State Delta Delta | December 5, 1972 | Trine University | Angola, Indiana | Active |
| North Carolina Delta Epsilon | December 9, 1972 | North Carolina A&T State University | Greensboro, North Carolina | Active |
| New Haven Delta Zeta | March 31, 1973 | University of New Haven | West Haven, Connecticut | Active |
| Hartford Delta Eta | June 1, 1973 | University of Hartford | West Hartford, Connecticut | Active |
| West Virginia Delta Theta | November 3, 1973 | West Virginia University Institute of Technology | Beckley, West Virginia | Active |
| Toledo Delta Iota | February 23, 1974 | University of Toledo | Toledo, Ohio | Active |
| Northrop Delta Kappa | March 22, 1975 | Northrop University | Inglewood, California | Inactive |
| New York Delta Lambda | April 19, 1975 | University at Buffalo | Buffalo, New York | Inactive |
| Southern Delta Mu | April 26, 1975 | Southern University | Baton Rouge, Louisiana | Active |
| Dayton Delta Nu | March 25, 1977 | University of Dayton | Dayton, Ohio | Active |
| Virginia Delta Xi | April 30, 1977 | University of Virginia | Charlottesville, Virginia | Active |
| Columbia Delta Omicron | May 13, 1977 | Columbia University | New York City, New York | Active |
| Rochester Delta Pi | May 14, 1977 | Rochester Institute of Technology | Rochester, New York | Active |
| Louisville Delta Rho | October 28, 1977 | University of Louisville | Louisville, Kentucky | Active |
| Central Florida Delta Sigma | June 2, 1978 | University of Central Florida | Orlando, Florida | Active |
| South Carolina Delta Tau | September 8, 1978 | University of South Carolina | Columbia, South Carolina | Active |
| Alabama Delta Upsilon | November 21, 1978 | University of Alabama in Huntsville | Huntsville, Alabama | Active |
| UCSB Delta Phi | May 19, 1979 | University of California, Santa Barbara | Santa Barbara, California | Active |
| Kettering Delta Chi | October 6, 1979 | Kettering University | Flint, Michigan | Active |
| Naval Academy Delta Psi | March 20, 1980 | United States Naval Academy | Annapolis, Maryland | Active |
| Old Dominion Delta Omega | March 27, 1981 | Old Dominion University | Norfolk, Virginia | Active |
| South Dakota Phi Alpha | April 3, 1981 | South Dakota School of Mines and Technology | Rapid City, South Dakota | Active |
| George Washington Phi Gamma | April 24, 1981 | George Washington University | Washington, D.C. | Active |
| Prairie View Phi Delta | April 27, 1981 | Prairie View A&M University | Prairie View, Texas | Active |
| San Jose Phi Zeta | October 8, 1982 | San Jose State University | San Jose, California | Active |
| Lowell Phi Epsilon | September 24, 1982 | University of Massachusetts Lowell | Lowell, Massachusetts | Active |
| Missouri KC Phi Eta | April 30, 1983 | University of Missouri–Kansas City | Kansas City, Missouri | Active |
| Lawrence Phi Iota | May 21, 1984 | Lawrence Technological University | Southfield, Michigan | Active |
| Clemson Phi Kappa | September 10, 1984 | Clemson University | Clemson, South Carolina | Active |
| Memphis Phi Lambda | October 29, 1984 | University of Memphis | Memphis, Tennessee | Active |
| Delaware Phi Mu | April 22, 1985 | University of Delaware | Newark, Delaware | Active |
| Washington Phi Nu | May 22, 1985 | University of Washington | Seattle, Washington | Active |
| South Alabama Phi Xi | October 26, 1985 | University of South Alabama | Mobile, Alabama | Active |
| Western Michigan Phi Pi | December 5, 1985 | Western Michigan University | Kalamazoo, Michigan | Active |
| Stevens Phi Omicron | October 17, 1986 | Stevens Institute of Technology | Hoboken, New Jersey | Active |
| Evansville Phi Rho | May 6. 1987 | University of Evansville | Evansville, Indiana | Active |
| Colorado Phi Sigma | October 23, 1987 | University of Colorado Denver | Denver, Colorado | Active |
| UAB Phi Tau | November 21, 1987 | University of Alabama at Birmingham | Birmingham, Alabama | Inactive |
| Texas A&I Phi Upsilon | December 5, 1987 | Texas A&M University–Kingsville | Kingsville, Texas | Active |
| Wisconsin Phi Phi | April 23, 1989 | University of Wisconsin–Milwaukee | Milwaukee, Wisconsin | Active |
| New Orleans Phi Chi | November 12, 1989 | University of New Orleans | New Orleans, Louisiana | Active |
| Cal Poly San Luis Obispo Phi Psi | March 3, 1990 | California Polytechnic State University, San Luis Obispo | San Luis Obispo, California | Active |
| Gannon Phi Omega | April 28, 1990 | Gannon University | Erie, Pennsylvania | Active |
| Union Alpha Alpha | May 5, 1990 | Union College | Schenectady, New York | Active |
| UC Irvine Alpha Beta | May 19, 1990 | University of California, Irvine | Irvine, California | Active |
| South Florida Alpha Gamma | March 11, 1991 | University of South Florida | Tampa, Florida | Active |
| Tennessee State Alpha Delta | March 29, 1991 | Tennessee State University | Nashville, Tennessee | Active |
| Wyoming Phi Beta | April 4, 1981 | University of Wyoming | Laramie, Wyoming | Inactive |
| Santa Clara Alpha Epsilon | April 29, 1991 | Santa Clara University | Santa Clara, California | Active |
| Maine Alpha Zeta | April 24, 1992 | University of Maine | Orono, Maine | Active |
| New York Alpha Eta | April 21, 1993 | Binghamton University | Vestal, New York | Active |
| Wisconsin Alpha Theta | April 23, 1993 | University of Wisconsin–Platteville | Platteville, Wisconsin | Active |
| FAMU-FSU Alpha Iota | April 16, 1994 | Florida A&M University – Florida State University College of Engineering | Tallahassee, Florida | Active |
| Florida International Alpha Kappa | April 18, 1994 | Florida International University, Downtown Miami Center | Miami, Florida | Active |
| Tufts Alpha Lambda | April 21, 1994 | Tufts University | Medford, Massachusetts | Active |
| NYIT Alpha Nu | April 28, 1994 | New York Institute of Technology | New York City, New York | Inactive |
| SUNY-Stony Brook Alpha Xi | April 29, 1994 | Stony Brook University | Stony Brook, New York | Active |
| Boston University Alpha Mu | November 29, 1994 | Boston University | Boston, Massachusetts | Active |
| Ohio Alpha Omicron | May 10, 1996 | Ohio University | Athens, Ohio | Active |
| Michigan-Dearborn Alpha Pi | October 25, 1996 | University of Michigan–Dearborn | Dearborn, Michigan | Active |
| UIC Alpha Sigma | October 23, 1999 | University of Illinois Chicago | Chicago, Illinois | Active |
| Florida Tech Alpha Rho | April 27, 2000 | Florida Institute of Technology | Melbourne, Florida | Active |
| Saint Martin's Alpha Tau | April 3, 2003 | Saint Martin's University | Lacey, Washington | Active |
| Puerto Rico Alpha Phi | April 29, 2003 | University of Puerto Rico at Mayagüez | Mayagüez, Puerto Rico | Active |
| SIUE Alpha Chi | May 1, 2003 | Southern Illinois University Edwardsville | Edwardsville, Illinois | Active |
| IUPUI Alpha Upsilon | 2005 | Indiana University–Purdue University Indianapolis | Indianapolis, Indiana | Inactive |
| VMI Alpha Psi | April 23, 2007 | Virginia Military Institute | Lexington, Virginia | Active |
| Temple Beta Alpha | February 8, 2009 | Temple University | Philadelphia, Pennsylvania | Active |
| Baylor Beta Beta | February 8, 2009 | Baylor University | Waco, Texas | Active |
| Fresno State Beta Gamma | February 28, 2010 | California State University, Fresno | Fresno, California | Active |
| San Diego Beta Delta | February 11, 2011 | University of San Diego | San Diego, California | Active |
| Cal Maritime Beta Epsilon | March 3, 2012 | California State University Maritime Academy | Vallejo, California | Active |
| Texas A&M Qatar Beta Zeta | April 24, 2012 | Texas A&M University at Qatar | Doha, Qatar | Active |
| North Texas Beta Eta | February 22, 2014 | University of North Texas | Denton, Texas | Active |
| Guanajuato Beta Theta | February 28, 2015 | Universidad de Guanajuato | Salamanca, Guanajuato, Mexico | Active |
| Georgia Southern Beta Iota | February 28, 2015 | Georgia Southern University | Statesboro, Georgia | Active |
| Norwich Beta Kappa | February 25, 2017 | Norwich University | Northfield, Vermont | Active |
| Northern Illinois Beta Lambda | February 24, 2018 | Northern Illinois University | DeKalb, Illinois | Active |
| Embry-Riddle Beta Mu | February 24, 2018 | Embry–Riddle Aeronautical University, Daytona Beach | Daytona Beach, Florida | Active |
| Nevada Reno Beta Nu | February 24, 2018 | University of Nevada, Reno | Reno, Nevada | Active |
| AU Sharjah Beta Xi | 2018 | American University of Sharjah | Sharjah, Emirate of Sharjah, United Arab Emirates | Active |
| CUA Beta Omicron | May 13, 2021 | Catholic University of America | Washington, D.C. | Active |