Phi Kappa Psi (ΦΚΨ), commonly known as Phi Psi, is an American collegiate social fraternity that was founded at Jefferson College in Canonsburg, Pennsylvania in 1852. The fraternity has over ninety chapters at accredited four-year colleges and universities throughout the United States. More than 179,000 men have been initiated into Phi Kappa Psi since its founding. Phi Kappa Psi and Phi Gamma Delta, both founded at the same college, form the Jefferson Duo.
Charles Page Thomas Moore was a lawyer and justice of the West Virginia Supreme Court of Appeals, who before the American Civil War had helped found the Phi Kappa Psi fraternity in 1852 at Jefferson College in Canonsburg, Pennsylvania.
William Henry Letterman was born in Canonsburg, Pennsylvania. He was the co-founder of the Phi Kappa Psi fraternity in 1852 at Jefferson College in Canonsburg, Pennsylvania.
Kappa Psi Pharmaceutical Fraternity, Incorporated (ΚΨ) is the largest professional pharmaceutical fraternity in the world with more than 6,000 student members and more than 87,000 alumni members. It was founded in 1879 at Russell Military Academy in New Haven, Connecticut as the Society of Kappa Psi.
Theta Kappa Nu (ΘΚΝ) Fraternity was an American national collegiate fraternity founded in 1924 by delegates from eleven local fraternities. It merged with Lambda Chi Alpha in 1939.
Theta Kappa Psi Medical Fraternity, Incorporated, (ΘΚΨ) is a North American professional medical fraternity. As of 2023, it operates as an independent local fraternity with one active chapter.
Kappa Phi Lambda (ΚΦΛ) was an American collegiate fraternity. It was established in 1862 at Jefferson College and was dissolved in 1874. Kappa Phi Lambda is considered one of the members of the "Jefferson Triad" of fraternities founded at Jefferson College, with the other two being Phi Gamma Delta and Phi Kappa Psi. However, with the demise of Kappa Phi Lambda, the remaining two fraternities are known as the Jefferson Duo.
Omega Upsilon Phi (ΩΥΦ) was a professional medical fraternity founded at the University at Buffalo in 1894. It merged with Phi Beta Pi in 1934.
Phi Beta Pi (ΦΒΠ) is an American professional fraternity for medical students that was founded in 1891 at the West Pennsylvania Medical College. Currently, the fraternity operates in Galveston, Texas at the University of Texas Medical Branch at Galveston (UTMB).
Washington & Jefferson College is host to 8 Greek organizations and a significant percentage of the undergraduate student body is active in Greek life. With 43% of women and 40% of men of the student body participating in "greek life," fraternities and sororities play a significant role in student life at W&J. The Princeton Review named Washington & Jefferson College 12th on their 2010 list of "Major Frat and Sorority Scene" in the United States. As of 2021, the Office of Fraternity & Sorority Life recognized 4 fraternities, Alpha Tau Omega, Beta Theta Pi, Delta Tau Delta, and Phi Kappa Psi, and four sororities, Delta Gamma, Kappa Alpha Theta, Kappa Kappa Gamma, and Pi Beta Phi. The fraternities are governed by a local Interfraternal Council and the sororities are governed by a local Panhellenic Council, while the Greek Judiciary manages broad policy violations at the chapter-level. All Greek organizations occupy College-owned houses on Chestnut Street on campus. All members of fraternities and sororities must pay the $100 "Greek Membership Fee," a levy designed to fund leadership seminars and other educational events for Greeks.
Alpha Lambda Tau (ΑΛΤ) was a men's college fraternity founded in 1916 at Oglethorpe University. For its first decade Alpha Lambda Tau permitted expansion only within the southern states. At the start of its fourth decade, in 1946, the national organization of Alpha Lambda Tau dissolved; the majority of its chapters affiliated with Tau Kappa Epsilon.
Psi Omega (ΨΩ) is an international professional fraternity for Dentistry. It was founded on June 8, 1892, "to maintain the standards of the profession, to encourage scientific investigation and literary culture." Psi Omega is the third professional dental fraternity to be formed, following Delta Sigma Delta (1882) and Xi Psi Phi (1889), and pre-dating Alpha Omega (1907). Psi Omega has 27 active chapters.
Fraternities and sororities at the University of Virginia include the collegiate organizations on the grounds of the University of Virginia in Charlottesville, Virginia. First founded in the 1850s with the establishment of several fraternities, the system has since expanded to include sororities, professional organizations, service fraternities, honor fraternities, and cultural organizations. Fraternities and sororities have been significant to the history of the University of Virginia, including the founding of two national fraternities Kappa Sigma (ΚΣ) and Pi Kappa Alpha (ΠΚΑ).
Phi Kappa (ΦΚ) was a social fraternity founded on October 1, 1889 by a group of Catholic students at Brown University who were refused entrance to other fraternities because of their faith. On April 29, 1959, Phi Kappa merged with a similar fraternity Theta Kappa Phi to form Phi Kappa Theta.
Kappa Nu (ΚΝ) was an American college fraternity that was active from 1911 to 1961 when it merged with Phi Epsilon Pi.
Sigma Delta Kappa (ΣΔΚ) is a Professional Fraternity in the field of Law. It was founded in 1914 at the University of Michigan Law School.
