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. Zitrides also spent time as an assistant coach at Brown and Cornell University. He played as a guard at Dartmouth under Earl Blaik from 1936 to 1938.