Beta Gamma Sigma (ΒΓΣ) is an international business honor society. Founded in 1913 at the University of Wisconsin, University of Illinois and the University of California, it has over 980,000 members, selected from more than 600 collegiate chapters in business schools accredited by AACSB International. It has collegiate chapters in over 190 countries.
Baird's Manual of American College Fraternities was a compendium of fraternities and sororities in the United States and Canada, published between 1879 and 1991. One modern writer notes, "Baird's Manual of American College Fraternities, was, in essence, the Bible of the Greek letter system."
Theta Nu Epsilon is a sophomore class society. Founded at Wesleyan University in 1870 as a chapter of Skull and Bones, the society expanded into a new national organization. It accepts members regardless of their fraternity status.
The Professional Fraternity Association (PFA) is an American association of national, collegiate, professional fraternities and sororities that was formed in 1978. Since PFA groups are discipline-specific, members join while pursuing graduate degrees as well as undergraduate degrees. PFA groups seek to develop their members professionally in addition to the social development commonly associated with Panhellenic fraternities. Membership requirements of the PFA are broad enough to include groups that do not recruit new members from a single professional discipline. The PFA has welcomed service and honor fraternities as members; however, Greek letter honor societies more commonly belong to the Association of College Honor Societies.
Iota Alpha Pi (ΙΑΠ) is an international collegiate sorority operating in the United States and Canada from March 3, 1903 to July 1971, when it ceased operations. It was then restarted when Alpha chapter was rechartered at Hunter College in October 2023.
Pi Delta Kappa (ΠΔΚ) was a regional collegiate sorority operating in Ohio from 1907 to 1913. The sorority planned to become a national organization, but ultimately was absorbed by Chi Omega.
This article describes smaller collegiate sororities created in the nineteenth century and early to middle twentieth century on campuses in the United States and Canada. These sororities are defunct. Individual chapters may have affiliated with National Panhellenic Conference (NPC) sororities.
Phi Omega Pi (ΦΩΠ) was a national collegiate sorority operating in the United States from 1922 until 1946 when its chapters were absorbed by several larger sororities, and merged with the national sorority, Delta Zeta.
Sigma Sigma Omicron (ΣΣΟ) was a national collegiate sorority operating under that name in the United States from November 1, 1920 to 1927. It has had several successor names.
Phi Beta Delta (ΦΒΔ) was a college social fraternity for Jewish students in the United States founded at Columbia University on April 12, 1912. In 1941 the fraternity merged with Pi Lambda Phi.
Alpha Kappa Pi (ΑΚΠ) was a collegiate social fraternity founded in 1921 at the Newark College of Engineering. In 1946 it merged with Alpha Sigma Phi.
Phi Kappa Pi (ΦΚΠ) is a Canadian national fraternity. Founded on March 22, 1913, as Canada's only national fraternity, Phi Kappa Pi has active chapters in Burnaby, Halifax, Toronto, and Montreal, as well as six inactive chapters. There are alumni chapters associated with most undergraduate locations, as well as a National Council. The fraternity operates as a social one on all of the campuses upon which it resides.
Beta Sigma Omicron (ΒΣΟ) is a defunct American collegiate sorority. It was founded on December 12, 1888, at the University of Missouri and merged with Zeta Tau Alpha on August 7, 1964.
Pi Delta Theta (ΠΔΘ) was a national collegiate sorority operating in the United States from February 14, 1926 until it was absorbed by Delta Sigma Epsilon in September 1941.
Omicron Alpha Tau (ΟΑΤ) was an historically Jewish fraternity founded in 1912. It merged with Tau Delta Phi in 1934.
Sigma Tau Phi (ΣΤΦ) was a historically Jewish fraternity founded in 1918 and which merged into Alpha Epsilon Pi (ΑΕΠ) in 1947.
Beta Psi (ΒΨ) was a small national men's fraternity founded in 1924 at the University of Illinois. Eventually chartering five chapters, it survived for about 10 years until succumbing to the pressures of the Great Depression.
Phi Epsilon Kappa (ΦΕΚ) is a national professional fraternity for persons engaged in or pursuing careers in the fields of physical education, health, recreation, dance, human performance, exercise science, sports medicine and sports management.
Gamma Epsilon Pi (ΓΕΠ) was a business honor society for women. In1933, the group merged into Beta Gamma Sigma, a similar organization.
