Yusmeiro Alberto Petit is a Venezuelan professional baseball pitcher for the San Francisco Giants of Major League Baseball. Petit throws right-handed. He has played for the Florida Marlins, the Arizona Diamondbacks, and the San Francisco Giants at the major league level.
- Born: November 22, 1984 (age 32), Maracaibo
- Aliases: Yusmeiro Alberto Petit
- Height: 6′ 1″ (1.85m)