Marco Antonio Barrera
- Nickname: Baby Faced Assassin
- Date of Birth: 17th January 1974 (50 years old)
- Retired: 12th February 2011 (Career length: 21 years 2 months)
- Status: Retired
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Nationality:
Mexico -
Birthplace:
Mexico City, Distrito Federal, Mexico
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Residence:
Guadalajara, Jalisco, Mexico
- Division: Super Bantamweight
- Height: 168cm
- Reach: 178cm
- Stance: Orthodox
- BoxRec: Marco Antonio Barrera
- Debut: 22nd November 1989