# List of Phi Sigma chapters

Following is the complete chapter and colony roll of Phi Sigma, an honor society for biological sciences. Active chapters are indicated in bold. Inactive chapters are in italics.
| Name | Chartered | Institution | Location | Status |
| Alpha | 1915 | Ohio State University | Columbus, Ohio | Active |
| Beta | 1916 | University of Michigan | Ann Arbor, Michigan | Active |
| Gamma | 1916 | North Dakota State University | Fargo, North Dakota | Active |
| Delta | 1917 | University of Maine | Orono, Maine | Active |
| Epsilon | 1917 | University of Denver | Denver, Colorado | Active |
| Zeta | 1917 | University of Wisconsin–Madison | Madison, Wisconsin | Active |
| Eta | 1921 | University of Akron | Akron, Ohio | Active |
| Theta | 1921 | Michigan State University | East Lansing, Michigan | Active |
| Iota | 1921 | Washington University in St. Louis | St. Louis, Missouri | Active |
| Kappa | 1921 | University of Kansas | Lawrence, Kansas | Active |
| Lambda | 1921 | University of Montana | Missoula, Montana | Active |
| Mu | 1922 | University of California, Berkeley | Berkeley, California | Active |
| Nu | 1922 | Washington & Jefferson College | Washington, Pennsylvania | Active |
| Xi | 1924 | University of Nebraska–Lincoln | Lincoln, Nebraska | Active |
| Omicron | 1924 | University of North Dakota | Grand Forks, North Dakota | Active |
| Pi | 1925 | Emory University | Atlanta, Georgia | Active |
| Rho | 1925 | University of Illinois at Urbana–Champaign | Urbana, Illinois | Active |
| Sigma | 1925 | University of Florida | Gainesville, Florida | Active |
| Tau | 1926 | Duke University | Durham, North Carolina | Active |
| Upsilon | 1926 | Miami University | Oxford, Ohio | Active |
| Phi | 1926 | University of New Hampshire | Durham, New Hampshire | Active |
| Chi | 1927 | Montana State University | Bozeman, Montana | Active |
| Psi | 1928 | University of Washington | Seattle, Washington | Active |
| Omega | 1928 | University of Oklahoma | Norman, Oklahoma | Active |
| Alpha Alpha | 1928 | University of Southern California (USC) | Los Angeles, California | Active |
| Alpha Beta | 1928 | University of Mount Union | Alliance, Ohio | Active |
| Alpha Gamma | 1928 | University of South Dakota | Vermillion, South Dakota | Active |
| Alpha Delta | 1929 | Lawrence University | Appleton, Wisconsin | Active |
| Alpha Epsilon | 1929 | University of Pittsburgh | Pittsburgh, Pennsylvania | Active |
| Alpha Zeta | 1930 | College of William & Mary | Williamsburg, Maryland | Active |
| Alpha Eta | 1930 | Oklahoma State University–Stillwater | Stillwater, Oklahoma | Active |
| Alpha Theta | 1930 | Washington State University | Pullman, Washington | Active |
| Alpha Iota | 1932 | Bucknell University | Lewisburg, Pennsylvania | Active |
| Alpha Kappa | 1932 | Hunter College | New York City, New York | Active |
| Alpha Lambda | 1932 | University of Utah | Salt Lake City, Utah | Active |
| Alpha Mu | 1933 | University of Oregon | Eugene, Oregon | Active |
| Alpha Nu | 1935 | University of New Mexico | Albuquerque, New Mexico | Active |
| Alpha Xi | 1935 | University of Rhode Island | Kingston, Rhode Island | Active |
| Alpha Omicron | 1938 | Marquette University | Milwaukee, Wisconsin | Active |
| Alpha Pi | 1941 | University of Colorado Boulder | Boulder, Colorado | Active |
| Alpha Rho | 1945 | University of Arkansas | Fayetteville, Arkansas | Active |
| Alpha Sigma | 1946 | University of Texas at Austin | Austin, Texas | Active |
| Alpha Tau | 1947 | National University of Mexico | Mexico City, Mexico | Active |
| Alpha Upsilon | 1947 | University of California, Los Angeles | Los Angeles, California | Active |
| Alpha Phi | 1948 | University of Puget Sound | Tacoma, Washington | Active |
| Alpha Chi | 1949 | University of the Philippines Manila | Ermita, Manila, Philippines | Active |
| Alpha Psi | 1949 | Virginia Tech | Blacksburg, Virginia | Active |
| Alpha Omega | 1951 | University of Georgia | Athens, Georgia | Active |
| Beta Alpha | 1955 | Pennsylvania State University | State College, Pennsylvania | Active |
| Beta Beta | 1956 | Florida State University | Tallahassee, Florida | Active |
| Beta Gamma | 1957 | Long Island University | Brooklyn, New York | Active |
| Beta Delta | 1958 | University of Virginia | Charlottesville, Virginia | Active |
| Beta Epsilon | 1960 | Northern Illinois University | DeKalb, Illinois | Active |
| Beta Zeta | 1961 | University of Maryland, College Park | College Park, Maryland | Active |
| Beta Eta | 1962 | University of Idaho | Moscow, Idaho | Active |
| Beta Theta | 1963 | North Carolina State University | Raleigh, North Carolina | Active |
| Beta Iota | 1964 | Duquesne University | Pittsburgh, Pennsylvania | Active |
| Beta Kappa | 1965 | Texas Christian University | Fort Worth, Texas | Active |
| Beta Lambda | 1966 | Illinois State University | Normal, Illinois | Active |
| Beta Mu | 1967 | University of Louisiana at Lafayette | Lafayette, Louisiana | Active |
| Beta Nu | 1968 | Northeastern University | Boston, Massachusetts | Active |
| Beta Xi | 1969 | University of Tennessee | Knoxville, Tennessee | Active |
| Beta Omicron | 1969 | University of Colorado Denver | Denver, Colorado | Active |
| Beta Pi | 1970 | Eastern Illinois University | Charleston, Illinois | Active |
| Beta Rho | 1970 | Texas A&M University | College Station, Texas | Active |
| Beta Sigma | 1971 | Central Washington University | Ellensburg, Washington | Active |
| Beta Tau | 1973 | University of South Florida | Tampa, Florida | Active |
| Beta Upsilon | 1974 | University of Texas at San Antonio | San Antonio, Texas | Active |
| Beta Phi | 1975 | University of Texas at Arlington | Arlington, Texas | Active |
| Beta Chi | 1975 | Michigan Technological University | Houghton, Michigan | Active |
| Beta Psi | 1976 | Eastern Kentucky University | Richmond, Kentucky | Active |
| Beta Omega | 1976 | Wayne State University | Detroit, Michigan | Active |
| Gamma Alpha | 1976 | Southern University | Baton Rouge, Louisiana | Active |
| Gamma Beta | 1978 | Creighton University | Omaha, Nebraska | Active |
| Gamma Gamma | 1978 | Virginia Commonwealth University | Richmond, Virginia | Active |
| Gamma Delta | 1984 | University of California, Davis | Davis, California | Active |
| Gamma Epsilon | 1985 | Eastern Washington University | Cheney, Washington | Active |
| Gamma Zeta | | | | Unassigned |
| Gamma Eta | 1988 | Worcester Polytechnic Institute | Worcester, Massachusetts | Active |
| Gamma Theta | 1990 | University of Alabama at Birmingham | Birmingham, Alabama | Active |
| Gamma Iota | 1994 | Missouri University of Science and Technology | Rolla, Missouri | Active |
| Gamma Kappa | | | | Unassigned |
| Gamma Lambda | 1996 | Bowie State University | Prince George's County, Maryland | Active |
| Gamma Mu | 1997 | University of New England | Biddeford, Maine | Active |
| Gamma Nu | 1997 | Ohio Wesleyan University | Delaware, Ohio | Active |
| Gamma Xi | 1999 | Minot State University | Minot, North Dakota | Active |
| Gamma Omicron | 2002 | University of West Florida | Pensacola, Florida | Active |
| Gamma Pi | | | | Unassigned |
| Gamma Rho | 2004 | Quinnipiac University | Hamden, Connecticut | Active |
| Gamma Sigma | 2007 | Siena College | Loudonville, New York | Active |
| Gamma Tau | 2008 | California State University, Dominguez Hills | Carson, California | Active |
| Gamma Upsilon | 2009 | Endicott College | Beverly, Massachusetts | Active |
| Gamma Phi | 2012 | University of Pennsylvania | Philadelphia, Pennsylvania | Active |
| Gamma Chi | 2012 | University of South Carolina Beaufort | Beaufort and Lowcountry region, South Carolina | Active |
| Gamma Psi | 2013 | St. John's University (New York City) | New York City, New York | Active |
| Gamma Omega | 2015 | University of Redlands | Redlands, California | Active |