Derrel Osborn Thomas (born January 14, 1951) is a former professional baseball player who played in Major League Baseball primarily as a second baseman, center fielder, and shortstop from 1971 to 1985. He held the distinction of being one of a few players to have played every position (except pitcher) at least once in his career.

Following his playing career, Thomas was the first manager of the Boise Hawks in 1987, then an independent team in the Class A-Short Season Northwest League. As of 2009, he is a member of the Los Angeles Dodgers organization serving as a representative of the Dodgers Legend Bureau.

Thomas is currently the head baseball coach at Adrenaline Athletic Training in Riverside, California.