List of Sigma Tau chapters

Sigma Tau was an engineering honor society.^[1][2] In 1974, it merged with Tau Beta Pi, the oldest engineering honor society and the second oldest collegiate honor society in the United States. As part of the merger, Tau Beta Pi absorbed twelve Sigma Tau chapters into its existing chapters located on the same campuses. Tau Beta Pi re-chartered 22 Sigma Tau chapters at campuses where it did not exist.^[3][4]

In the following chapter list, inactive chapters and institutions are indicated in italics.^[5]

Chapter	Charter date and range	Institution	Location	Status	Ref.
Alpha	February 22, 1904 – January 1, 1974	University of Nebraska–Lincoln	Lincoln, Nebraska	Merged (ΤΒΠ)	[a]
Beta	November 16, 1907 – March 26, 1912	University of Iowa	Iowa City, Iowa	Inactive	[6]
Gamma	February 22, 1911 – January 1, 1974	University of Pennsylvania	Philadelphia, Pennsylvania	Merged (ΤΒΠ)	[7][b]
Delta (First)	April 12, 1912 – April 22, 1916	University of South Dakota	Vermillion, South Dakota	Inactive, Reissued
Delta (Second)	May 17, 1941 – January 1, 1974	South Dakota State University	Brookings, South Dakota	Merged (ΤΒΠ )	[8][c]
Epsilon	May 16, 1912 – January 1, 1974	Kansas State University	Manhattan, Kansas	Merged (ΤΒΠ)	[d]
Zeta	April 23, 1913 – January 1, 1974	Oregon State University	Corvallis, Oregon	Merged (ΤΒΠ)	[e]
Eta	May 16, 1913 – January 1, 1974	Washington State University	Pullman, Washington	Merged (ΤΒΠ)	[f]
Theta	February 27, 1914 – before 1974	University of Illinois Urbana-Champaign	Urbana, Illinois	Inactive	[9]
Iota	June 1, 1914 – January 1, 1974	University of Colorado Boulder	Boulder, Colorado	Merged (ΤΒΠ)	[g]
Kappa	May 1, 1915 – January 1, 1974	Pennsylvania State University	State College, Pennsylvania	Merged (ΤΒΠ)	[h]
Lambda	May 22, 1915 – January 1, 1974	University of Kansas	Lawrence, Kansas	Merged (ΤΒΠ)	[10][i]
Mu	May 13, 1916 – January 1, 1974	University of Oklahoma	Norman, Oklahoma	Merged (ΤΒΠ)	[j]
Nu	October 20, 1916 – January 1, 1974	Swarthmore College	Swarthmore, Pennsylvania	Merged (ΤΒΠ)	[k]
Xi	April 8, 1921 – January 1, 1974	George Washington University	Washington, D.C.	Merged (ΤΒΠ)	[l]
Omicron	December 21, 1935 – January 1, 1974	University of Louisville	Louisville, Kentucky	Merged (ΤΒΠ)	[m]
Pi	April 8, 1922 – January 1, 1974	University of North Dakota	Grand Forks, North Dakota	Merged (ΤΒΠ)	[n]
Rho	May 22, 1922 – January 1, 1974	University of Idaho	Moscow, Idaho	Merged (ΤΒΠ)	[o]
Sigma	April 16, 1923 – January 1, 1974	Oklahoma State University	Stillwater, Oklahoma	Merged (ΤΒΠ)	[p]
Tau	April 26, 1923 – January 1, 1974	South Dakota School of Mines and Technology	Rapid City, South Dakota	Merged (ΤΒΠ)	[q]
Upsilon	December 3, 1923 – January 1, 1974	University of Florida	Gainesville, FL	Merged (ΤΒΠ)	[r]
Phi	December 13, 1924 – January 1, 1974	University of Akron	Akron, OH	Merged (ΤΒΠ)	[s]
Chi	December 22, 1928 – January 1, 1974	University of New Mexico	Albuquerque, NM	Merged (ΤΒΠ)	[t]
Psi	May 31, 1930 – January 1, 1974	University of Pittsburgh	Pittsburgh, PA	Merged (ΤΒΠ)	[u]
Omega	January 13, 1932 – January 1, 1974	University of Wyoming	Laramie, WY	Merged (ΤΒΠ)	[v]
Alpha Alpha	May 14, 1936 – January 1, 1974	Colorado State University	Fort Collins, CO	Merged (ΤΒΠ)	[w]
Alpha Beta	October 17, 1942 – January 1, 1974	Southern Methodist University	Dallas, TX	Merged (ΤΒΠ)	[x]
Alpha Gamma	May 22, 1949 – January 1, 1974	New Mexico State University	Las Cruces, NM	Merged (ΤΒΠ)	[y]
Alpha Delta	February 10, 1951 – January 1, 1974	Utah State University	Logan, UT	Merged (ΤΒΠ)	[z]
Alpha Epsilon	May 22, 1952 – January 1, 1974	University of Nevada, Reno	Reno, NV	Merged (ΤΒΠ)	[aa]
Alpha Zeta	May 20, 1953 – January 1, 1974	Rice University	Houston, TX	Merged (ΤΒΠ)	[ab]
Alpha Eta	April 22, 1956 – January 1, 1974	Texas A&I University	Kingsville, TX	Merged (ΤΒΠ)	[ac]
Alpha Theta	April 23, 1956 – January 1, 1974	Youngstown State University	Youngstown, OH	Merged (ΤΒΠ)	[ad]
Alpha Iota	February 1, 1958 – January 1, 1974	Bradley University	Peoria, IL	Merged (ΤΒΠ)	[ae]
Alpha Kappa	April 19, 1966 – January 1, 1974	Fresno State University	Fresno, CA	Merged (ΤΒΠ)	[af]
Alpha Lambda	December 10, 1971 – January 1, 1974	Prairie View A&M University	Prairie View, TX	Merged (ΤΒΠ)	[ag]
Alpha Mu	November 17, 1973 – January 1, 1974	Christian Brothers College	Memphis, TN	Merged (ΤΒΠ)	[ah]
Omega Alpha	November 12, 1954 – January 1, 1974	General Chapter	n/a	Inactive	[11]