Lester William "Buster" McCrabb (November 4, 1914 – October 8, 2008) was an American starting pitcher who played in Major League Baseball.

He was obtained by the Philadelphia Athletics from the Wilkes-Barre team (Eastern) as part of a minor league working agreement.

In his only full season, he went 9–13 for the last-place 1941 A's with 11 complete games, one shutout (a seven-hit, three-strikeout whitewashing of the defending American League champion Detroit Tigers on July 27 at Shibe Park)[1] and two saves.

After an eight-year absence, including spending 1942–1947 in the minors, he returned with the club in 1950 for his last Major League appearance, then served the Athletics as a full-time coach from 1951–1954.

In a five-season American League career, McCrabb posted a 10–15 record with 57 strikeouts and a 5.96 ERA in 210 innings, including 13 complete games, one shutout, and one save.