Mercedes Pérez (born 4 June 1950) is a Cuban former volleyball player and three-time Olympian. She competed with the Cuban women's national volleyball team at the 1972 Summer Olympics in Munich, the 1976 Summer Olympics in Montreal, and the 1980 Summer Olympics in Moscow.
Pérez was part of the Cuban national team that won the silver medal at the 1977 FIVB World Cup in Japan and the gold medal at the 1978 FIVB World Championship in the Soviet Union. In 1978, she was selected as the best player in the world by the FIVB.
In 1985, Pérez retired from volleyball due to the 1984 Olympic boycott and an expected 1988 Olympic boycott brought by geopolitical tensions.
In 1987, Pérez gave birth to her daughter.