Jack Herndon "Buddy" Brewer (April 21, 1918 – November 30, 2003) was a pitcher in Major League Baseball who played from 1944 through 1946 for the New York Giants. Listed at 6 ft 2 in (1.88 m), 170 lb (77 kg), Brewer threw and batted right-handed. He attended the University of Southern California.
In a three-season career, Brewer posted a 9–10 record with 73 strikeouts and a 4.36 ERA in 43 appearances, including 28 starts, 10 complete games, and 2162⁄3 innings of work.