Pedro Ruben Decima (born 1964-03-10 in Benjamín Aráoz, Tucuman) is a former professional boxer from Argentina.
As an amateur Decima represented Argentina as a bantamweight at the 1984 Olympic Games. His results were:
Decima turned pro in 1984 and captured the WBC super bantamweight title with an upset TKO win over Paul Banke in 1990, a fight in which Banke was knocked down three times in the 4th round. He lost the belt in his first defense to Kiyoshi Hatanaka in 1991 and retired in 1993.
| Preceded by Paul Banke |
WBC Super Bantamweight Champion 5 Nov 1990 – 3 Feb 1991 |
Succeeded by Kiyoshi Hatanaka |