| Office: | Associate Justice of the Supreme Court of Puerto Rico |
| Term Start: | July 13, 2000 |
| Term End: | July 31, 2010. |
| Nominator: | Pedro Rosselló |
| Predecessor: | Antonio Negrón García |
| Successor: | Edgardo Rivera García |
| Birth Place: | Mayagüez, Puerto Rico |
| Birth Date: | July 15, 1951 |
| Death Date: | September 15, 2013 (aged 62) |
| Alma Mater: | University of Puerto Rico at Mayagüez (BBA) Pontifical Catholic University of Puerto Rico School of Law (JD) |
Efraín E. Rivera Pérez (July 15, 1951 – 15 September 2013)[1] was a Puerto Rican jurist who served as an Associate Justice on the Supreme Court of Puerto Rico. He held the position from 2000 to 2010.
Born in Mayagüez, Puerto Rico, he earned his bachelor's degree in Business Administration from the University of Puerto Rico at Mayagüez, and in 1975, he acquired the degree of Juris Doctor from the Pontifical Catholic University of Puerto Rico School of Law in Ponce, Puerto Rico.
He began his career as a trial lawyer, and later became a trial lawyer. 1983, served as District Judge, appointed by then-Governor Carlos Romero Barceló. From 1983 to 1984 he served as a Judge District Court Administrator, Mayagüez Judicial Region
In 1993 Governor Pedro Rosselló hired him to be his Legal Advisor. He also served as Deputy Secretary of Justice.
In 2000 he was appointed to the Supreme Court by Governor Rosselló. He took the oath of office on July 13, 2000 after confirmation by the Senate. On June 2, 2010 he announced that he resigned his position, making the effective date of his resignation July 31, 2010. He was replaced by Appeals Court judge Edgardo Rivera García.
Two months later, Governor Luis Fortuño appointed him as a special monitor to oversee and make recommendations on the operations of the Puerto Rico Police Department, after over 60 of its agents were arrested following an FBI sting against police corruption.
Efraín Rivera Pérez died on 15 September 2013 in a motorcycle accident in Guaynabo, Puerto Rico. He was 62 years old.