Rex, derived from the Latin word for king, is a male given name. It may refer to :
Rex (born 1947), a gay erotic artist
Rex Allen (1920–1999), an American actor and singer
Rex Allen, Jr. (born 1947), an American singer and son of the above
Rex Barney (1924–1997), an American baseball pitcher and announcer
Rex Beach (1877–1949), an American novelist and playwright
Rex Brothers (born 1987), American baseball player
Rex Brown (born 1964), a former bassist of heavy metal band Pantera
Rex Chapman (born 1967), an American basketball player
Rex Cherryman (1897–1928), an American stage and screen actor
Rex Connor (1907–1977), an Australian politician
Rex D. Davis (1924–2008), a federal law enforcement officer in the United States
Rex Eisen né Tod Rex Salvador, ex-guitarist of Murderdolls, Static-X and Dope
Rex Gildo (1939–1999), a German singer
Rex Goudie (born 1985), a Canadian singer and 2005 Canadian Idol runner-up
Rex Grossman (born 1980), an American football player
Rex Hadnot (born 1982), an American football player
Rex Harrison (1908–1990), a British actor
Rex Hobcroft (born 1925), Australian pianist and music administrator
Rex Hudler (born 1960), an American baseball player
Rex Hughes, an American basketball coach
Rex Humbard (1919–2007), an American television evangelist
Rex Hunt (born 1949), an Australian television and radio personality and former football player
Rex Hunt (governor) (born 1926), a former British Governor of the Falkland Islands
Rex Ingram, a disambiguation page
Rex Kern (born 1949), a former American football player
Rex Lease (1903–1966), an American actor
Rex Lee, a disambiguation page
Rex E. Lee (1937–1996), a former U.S. Solicitor General
Rex Linn (born 1956), an American actor
Rex Makin (born 1925), an English solicitor and philanthropist from Liverpool
Rex Maughan, the founder, president and CEO of Forever Living Products and Terry Labs
Rex Morgan, a disambiguation page
Rex Murphy (born 1947), a Canadian commentator
Rex Navarrete (born 1969), a Filipino American comedian
Rex Newmark (born 1984), a British television personality
Rex Norris, a disambiguation page
Rex Paterson (1902–1978), a British agriculturalist
Rex D. Pinegar (born 1931), a general authority of The Church of Jesus Christ of Latter-day Saints since 1972
Rex Reed (born 1938), an American journalist and film critic
Rex Ryan (born 1962), an American football coach
Rex Smith (born 1955), an American entertainer
Rex Stout (1886–1975), an American author
Rex Tucker (1913–1996), a British television director in the 1950s and 1960s
Rex Tucker (American football) (born 1976), a former American football player
Rex Wailes (1901–1986), an English engineer and historian on aspects of engineering history
Rex Walheim (born 1962), an American astronaut
Rex Walters (born 1970), an American basketball player and coach
Rex Wilson (born 1960), a New Zealand long-distance runner
