Theta Chi (ΘΧ) is an international college fraternity for men. It was founded on April 10, 1856 as the Theta Chi Society, at Norwich University, Norwich, Vermont, U.S., and was the first Greek Letter society to make its appearance at the university, and the 21st of the 64 North American Interfraternity Conference men's fraternities.
Theta Chi Fraternity was founded by two military cadets, Frederick Norton Freeman and Arthur Chase. A third man, Egbert Phelps, is considered to be the "assistant founder" for lending his help and advice to Freeman and Chase although he was never an undergraduate member himself (he was a member of the Chi Psi Fraternity). The first initiates after the founders were Edward Bancroft Williston and Lorenzo Potter. The early history of Theta Chi Fraternity is closely connected with the history of Norwich University.
In 1904 a group of students at the University of Maine organized a local fraternity, which was called “Delta Mu.” For a time its existence was kept secret but, after more members had joined and the prospect of success had become brighter, announcement was made to the other fraternities, in the Spring of 1905. This group afterwards became Gamma Chapter of Theta Chi.
On May 20, 1907 Gamma chapter of Theta Chi Fraternity was officially installed. Since then, the chapter has seen continuous activity, and currently, a revival of its brotherhood.