Kappa Delta Phi (ΚΔΦ), also known as KDPhi, is a social fraternity that was founded on April 14, 1900, at the Bridgewater State Normal School, now known as Bridgewater State University. The fraternity currently boasts 14 active chapters. A sorority, Kappa Delta Phi National Affiliated Sorority or NAS, was formed in 1971, and remains closely affiliated with the fraternity.