Juan Oscar Múñoz (born September 25, 1969 in Hialeah, Florida) is a former major league baseball pitcher.
Múñoz attended the University of Miami and was drafted by the Cleveland Indians in the fifth round of the 1990 amateur draft. He played in the Cleveland farm system until 1991. While with the Kinston Indians of the Carolina League, Muñoz threw a no-hitter against the Prince William Cannons on May 26, 1991.
On March 28, 1992, Múñoz and Curt Leskanic were traded to the Minnesota Twins organization for Paul Sorrento. While with Nashville in the Southern League, Munoz was named to the 1993 all-star team and was awarded Southern League Pitcher of the Year honors. He remained in the Twins farm system until 1995, when he was called up to the majors. In ten games, Muñoz went 2-1 with a 5.60 ERA.
During the off-season, Múñoz was selected off waivers by the Baltimore Orioles. He wound up his playing career playing for Rochester in the International League in 1996.