The Gamma Psi chapter of Kappa Sigam is one of Oklahoma State University's premier Greek Fraternities. Founded in May of 1920 our chapter has continued to grow and excel around the Oklahoma State campus. The Four Pillars of Kappa Sigma Fellowship, Leadership, Scholarship, and Service set our brotherhood apart from the rest.

The Gamma Psi chapter has maintained it's website at kappasigma.com since 1998 and is a member chapter in good standing of the Kappa Sigma National Fraternity

Our chapter house is located at 1401 W University Ave, Stillwater OK 74074.