Stuart Carlton Locklin (July 22, 1928 – December 4, 2016) was a Major League Baseball outfielder who played 25 games for the Cleveland Indians during parts of the 1955 and 1956 seasons.

Stu was the oldest brother, and his other two siblings Mory and Ron Locklin were also exceptional amateur athletes at Appleton High.

He earned three letters competing as a Badger in his first two years of college, before signing a professional baseball contract with the Cleveland Indians organization in 1949.

Locklin's professional baseball career continued for five more years in Indianapolis, Miami, Minneapolis, and San Diego.

[citation needed] While playing most of the series in Cuba due to poor weather in Minneapolis, Fidel Castro attended each game.

Before the deciding seventh game, Castro approached Locklin, pointed at his six-gun on his hip and stated "tonight, we win.