The Hon. Oliver E. Diaz, Jr. is a former Presiding Justice on the Supreme Court of Mississippi. He graduated from Notre Dame High School in 1977 and received a Bachelor of Arts degree from the University of South Alabama in 1982. In 1985, he graduated from the University of Mississippi School of Law, and in 2004, he received an LLM from the University of Virginia School of Law.
Diaz practiced law on the Gulf Coast. He served in the Mississippi House of Representatives from District 116 representing Biloxi and D’Iberville for seven years from 1988 to 1994. During his tenure in the Legislature, he was a subcommittee Chairman for the Insurance Committee and for the Judiciary Committee. He was on the Ways and Means Committee and was Secretary for the Constitution Committee. He also served as City Attorney for the City of D’Iberville for four years. Justice Diaz was elected to the Court of Appeals in November 1994 and served in that position until March 2000, at which time he was appointed to the Supreme Court by Governor Ronnie Musgrove. In 2000, he was elected to the Supreme Court for an eight year term beginning January 2001.