Gregory George "Gus" Zitrides (April 4, 1915 – January 27, 1987) was an American college football player and coach.

He served as the head football coach at Brown University for one season, in 1950, compiling a record of 1–8.

[3] Zitrides then attended Dartmouth College, where he played for the football team as a guard from 1936 to 1938 under head coach Earl Blaik.

[7] Before the 1950 season, Engle left to take over at Penn State, and he offered to bring along his assistants, Zitrides and Bill Doolittle.

[9][10] After his coaching career, Zitrides entered government service in 1951, in which he worked until his retirement in 1973.