Alpha Gamma Delta (ΑΓΔ), also known as Alpha Gam, is an international women's fraternity and social organization. It was founded on May 30, 1904, by eleven female students at Syracuse University in Syracuse, New York, and thus it is the youngest member of the Syracuse Triad of North American social sororities that also includes Gamma Phi Beta (1874) and Alpha Phi (1872). Since its founding, Alpha Gamma Delta has, as of December 2021, initiated over 201,000 members and installed 199 collegiate chapters and more than 250 alumnae groups.

Gamma Phi Beta is an international college sorority. It was founded in Syracuse University in 1874 and was the first of the Greek organizations to call itself a sorority. The term "sorority" was coined for Gamma Phi Beta by Dr. Frank Smalley, a professor at Syracuse University.