Started by several students in Veterinary Medicine at the University of Pennsylvania in Philadelphia. Omega Tau Sigma was initially developed and organized in 1906. The fraternity gradually spread to other Colleges of Veterinary Medicine when students formed chapters at fifteen veterinary schools in the United States and at one such school in Canada. Omega Tau Sigma is the only Veterinary Medical fraternity to have an international reach.
Omega Tau Sigma provides a closer relationship outside of the classroom for those students attending Veterinary Medicine programs at universities. The fraternity is open to all students attending a Veterinary Medical program and works to culture high professional ideals and excellent character, as well as the furtherance of the Veterinary profession.
|Collegiate Chapters||Founding Institution||Founding Date||Years Active||Status|
|Alpha||University of Pennsylvania School of Veterinary Medicine||1906||1906-1918, 1928-(1963+)||Inactive|
|Beta||Cornell University College of Veterinary Medicine||March 31, 1911||1911-||Active|
|Gamma||The Ohio State University,College of Veterinary Medicine||November 25, 1911||1911-||Active|
|Delta||University of Guelph Ontario Veterinary College||Fall 1913 or Spring 1914||1914-||Active|
|Epsilon||George Washington University College of Veterinary Medicine||(1918)||N/A||Never chartered|
|Zeta||Auburn University College of Veterinary Medicine||March 26, 1940||1940-||Active|
|Eta||University of Georgia College of Veterinary Medicine||October 18, 1948||1948-||Active|
|Theta||University of Illinois College of Veterinary Medicine||April 14, 1956||1956-||Active|
|Iota||Oklahoma State University College of Veterinary Medicine||December 20, 1958||1958||Active|
|Kappa||Iowa State University College of Veterinary Medicine||May 22, 1965||1965-||Active|
|Lambda||Virginia–Maryland College of Veterinary Medicine||Spring 1985||1985-||Active|
|Mu||University of Missouri College of Veterinary Medicine||1986||1986-1989||Inactive|
|Nu||Texas A&M College ollege of Veterinary Medicine & Biomedical Sciences||September 12, 1987||1987-||Active|
|Xi||Purdue University College of Veterinary Medicine||February 1990|
|Omicron||Michigan State University College of Veterinary Medicine||January 5, 1991||1991-||Active|
|Pi||Tuskegee University School of Veterinary Medicine||March 30, 1996||1996-||Active|
|Rho||Midwestern University College of Veterinary Medicine||2016||2016-||Active|
1 Epsilon chapter proposed, and constitution drawn up, but GWU dropped the Veterinary School prior to chartering.