Pedro Rubén Décima (born March 10, 1964) is an Argentine former professional boxer.
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. He would go on to suffer another defeat a year later against contender Rudy Zavala, and would end up retiring in 1993.
At his age, he works as a public boxer trainer in Buenos Aires, Argentina.