Sigma Nu Fraternity was founded in 1869 at Virginia Military Institute. Our founding fathers started with a purpose that we still hold to this day - to create a fraternal organization unlike any other, one that held the personal honor and integrity of its membership in the highest regard. Their idea has since become a tradition no one could possibly imagine… a legacy of honor, unparalleled in scope, that continues strong today. Our fraternity was founded in response to the mistreatment of cadets by older officers and stood upon the ideal where people are treated with the utmost respect, an ideal still held today.
The Epsilon Epsilon Chapter at Oklahoma State University was founded in 1920. In 1929, the Epsilon Epsilon Chapter built a chapter house, where the active brotherhood still resides to this day.  Since 1920 Sigma Nu has established a reputation of initiating OSU’s strongest undergraduate men. Becoming a Sigma Nu at Oklahoma State has proven to be more than just a 4 year college experience. Throughout history our brotherhood has maintained close relationships, among alumni and active brothers, that demonstrates commitment to Sigma Nu fraternity at OSU and on a national scale.  It is no question that our Alumni involvement remains one of the strongest on campus as well. This is evident by our recent $2.1 million house renovation completed in 2004 made possible by their support.