Beneath the 12-Mile Reef is a 1953 American Technicolor adventure film directed by Robert D. Webb and starring Robert Wagner, Terry Moore and Gilbert Roland. The screenplay was by A.I. Bezzerides. The film was the third motion picture made in CinemaScope, coming after The Robe and How to Marry a Millionaire. The supporting cast features J. Carrol Naish, Richard Boone, Peter Graves, Jay Novello, Harry Carey Jr. and Jacques Aubuchon.

Robert John Wagner Jr. is an American actor of stage, screen, and television. He is known for starring in the television shows It Takes a Thief (1968–1970), Switch (1975–1978), and Hart to Hart (1979–1984). He later had recurring roles on Two and a Half Men (2007–2008) and NCIS (2010–2019).