Jon Charles Ratliff (born December 22, 1971 in Syracuse, New York) is a former Major League Baseball player. Ratliff played one game in his career, for the Oakland Athletics in the 2000 season. He pitched one inning in relief not allowing a hit or a walk, and not striking out a batter.
Ratliff was drafted in the first round (24th overall) by the Chicago Cubs in the 1993 draft out of LeMoyne College. He played eight seasons in the minor leagues.