Lambda Theta Phi Latin Fraternity, Incorporated (ΛΘΦ) is a non-profit social fraternity in the United States. It was founded on December 1, 1975 at Kean College in Union, New Jersey. It emphasizes Latin unity and the celebration of the Latin culture. In 1992, Lambda Theta Phi was accepted into the North-American Interfraternity Conference (NIC). With its acceptance into the North-American Interfraternity Conference in 1992 it became a nationally recognized Latino Greek lettered organization in the U.S. In 1994, with the release of The History of Lambda Theta Phi Latin Fraternity, Inc., the fraternity published a historical account about its organization.
Lambda Theta Phi has received commendations from the American Red Cross, Division of Youth and Family Services, and various other organizations for its fundraising efforts on behalf of victims of natural disasters and homelessness both in the U.S. and internationally. The fraternity's previous national philanthropy was the American Heart Association. On July 30, 2014, Lambda Theta Phi Latin Fraternity, Inc. signed a commitment to support Congressional Hispanic Caucus Institute's (CHCI) high school college readiness programs.
Although Lambda Theta Phi is Latino by tradition, membership is open to all college males.
Lambda Theta Phi has 14 Founding Fathers: