// Workers AI · dad joke modeWhy join Xi Sigma Pi? It's a tree-mendous frat.

Xi Sigma Pi is a North American honor society for forestry and related sciences. In the following list, active chapters are noted in bold and inactive chapters are in italics.

Chapter	Charter date and range	Institution	Location	Status	Ref.
Alpha	November 24, 1908 – 20xx ?	University of Washington	Seattle, Washington	Inactive
Beta	1916	Michigan State University	East Lansing, Michigan	Active
Gamma	1917	University of Maine	Orono, Maine	Active
Delta	1920	University of Minnesota	Minneapolis, Minnesota	Active
Epsilon	1920	University of Idaho	Moscow, Idaho	Active
Zeta	1921	Oregon State University	Corvallis, Oregon	Active
Eta	1924–2017	Pennsylvania State University	State College, Pennsylvania	Inactive
Theta	1924	University of California, Berkeley	Berkeley, California	Active
Iota	1927–1929	Penn State Forest Academy	Mont Alto, Pennsylvania	Inactive
Kappa	1934–2019	Purdue University	West Lafayette, Indiana	Inactive
Lambda	1939	Utah State University	Logan, Utah	Active
Mu	1940	North Carolina State University	Raleigh, North Carolina	Active
Nu	1940	Louisiana State University	Baton Rouge, Louisiana	Active
Xi	1941	University of Georgia	Athens, Georgia	Active
Omicron	1943	Colorado State University	Fort Collins, Colorado	Active
Pi	1948	University of Florida	Gainesville, Florida	Active
Rho	1952	West Virginia University	Morgantown, West Virginia	Active
Sigma	1952	Auburn University	Auburn, Alabama	Active
Tau	1952–2017	University of Missouri	Columbia, Missouri	Inactive
Upsilon	1958–2017	University of Michigan	Ann Arbor, Michigan	Inactive
Phi	1960–202x ?	University of Montana	Missoula, Montana	Inactive
Chi	1962	Virginia Tech	Blacksburg, Virginia	Active
Psi	1962–202x ?	University of Massachusetts Amherst	Amherst, MA	Inactive
Omega	1964	Southern Illinois University Carbondale	Carbondale, Illinois	Active
Alpha Alpha	1965	University of Illinois Urbana-Champaign	Urbana, Illinois	Active
Alpha Beta	1965	Clemson University	Clemson, South Carolina	Active
Alpha Gamma	1965	Iowa State University	Ames, Iowa	Active
Alpha Delta	1966	Washington State University	Pullman, Washington	Active
Alpha Epsilon	1966	University of New Hampshire	Durham, New Hampshire	Active
Alpha Zeta	1968	Stephen F. Austin State University	Nacogdoches, Texas	Active
Alpha Eta	1971	Michigan Technological University	Houghton, Michigan	Active
Alpha Theta	1971	Mississippi State University	Starkville, Mississippi	Active
Alpha Iota				Unassigned
Alpha Kappa	1972	University of Tennessee	Knoxville, Tennessee	Active
Alpha Lambda	1973	California State Polytechnic University, Humboldt	Arcata, California	Active
Alpha Mu	1973	Oklahoma State University	Stillwater, Oklahoma	Active
Alpha Nu	1974–2017	University of Wisconsin–Madison	Madison, Wisconsin	Inactive
Alpha Xi	1975	University of Wisconsin–Stevens Point	Stevens Point, Wisconsin	Active
Alpha Omicron	1975	University of Vermont	Burlington, Vermont	Active
Alpha Pi	1975	Northern Arizona University	Flagstaff, Arizona	Active
Alpha Rho	1976	University of Kentucky	Lexington, Kentucky	Inactive
Alpha Sigma	1978–2017	Texas A&M University	College Station, Texas	Inactive
Alpha Tau	1980–1996	University of Alberta	Edmonton, Alberta, Canada	Inactive
Alpha Upsilon	1980	California Polytechnic State University, San Luis Obispo	San Luis Obispo, California	Active
Alpha Phi	1993	Louisiana Tech University	Ruston, Louisiana	Active
Alpha Chi	1997	University of Arkansas at Monticello	Monticello, Arkansas	Active
Alpha Psi	2019	Ohio State University	Columbus, Ohio	Active