Sigma Gamma Rho Sorority, Incorporated (ΣΓΡ) is a historically African American Greek lettered sorority. ΣΓΡ was founded on November 12, 1922, at Butler University in Indianapolis, Indiana by seven young educators. It was incorporated within the state of Indiana in December 1922 and became a national collegiate sorority on December 30, 1929, when a charter was granted to the Alpha chapter.

The sorority is a non-profit whose aim is to enhance the quality of life within the community. Public service, leadership development and the education of youth are the hallmark of the organization's programs and activities.