Sigma Alpha Omega was originally founded as a sister sorority to Chi Alpha Omega fraternity. Chi Alpha Omega was originally founded at East Carolina University in Greenville, North Carolina. The purpose of Chi Alpha Omega was to assemble Christian students in a Christ-centered brotherhood in order to enjoy Christian fellowship, service, accountability, and social activities.

In January 1998, the active brothers (both males and females) of the Beta Chapter of Chi Alpha Omega at North Carolina State University voted to form Sigma Alpha Omega® in hopes of benefiting both the fraternity and the sorority. Both groups committed to living according to the ideals of Christ and His Word, uplifting each other through fellowship and service, and bringing the love of Christ to North Carolina State University. 

Since the founding of the sorority, chapters of Sigma Alpha Omega® have been established at many colleges and universities across the nation. As the sorority grew, a need arose to connect chapters through a national organization. During the spring of 2004, the national board was established when active and alumni members of the Alpha Chapter met to pray about the future of the sorority.

Sigma Alpha Omega Christian Sorority, Inc. was officially recognized as a national non-profit organization under the laws of North Carolina in June 2004. 

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National Website: www.sigmaalphaomega.org