Grant Gillis (January 24, 1901 – February 4, 1981) was a utility infielder in Major League Baseball who played from 1927 through 1929 for the Washington Senators (1927–28) and Boston Red Sox (1929).

Listed at 5 ft 10 in (1.78 m), 165 lb., Gillis batted and threw right-handed.

In a three-season career, Gillis was a .245 hitter (48-for-196) with 10 RBI and 26 runs in 62 games, including 12 doubles and two triples.

Gillis died in Thomasville, Alabama, at age 80.

This biographical article relating to an American baseball infielder is a stub.