Phi Kappa Theta (ΦΚΘ), commonly known as Phi Kap, is a national social fraternity that has over 35 active chapters and colonies at universities across 21 U.S. states. The fraternity was founded on April 29, 1959, at Ohio State University in Columbus, Ohio with the agreed-upon merger of two older Catholic fraternities, Phi Kappa and Theta Kappa Phi. Phi Kappa was founded exactly 70 years prior in 1889 at Brown University in Providence, Rhode Island, while Theta Kappa Phi was founded later in October 1919 at Lehigh University in Bethlehem, Pennsylvania.