The Ringer is a 1952 British mystery film directed by Guy Hamilton and starring Herbert Lom, Donald Wolfit, Mai Zetterling, Greta Gynt, William Hartnell, and Denholm Elliott. It was Hamilton's directorial debut and the third English-language sound version of Edgar Wallace's 1929 play, which in of itself was based on his 1925 novel The Gaunt Stranger. The previous adaptations had come in 1928 (silent), 1931, 1932 (Germany-Austria), and 1938.

Mervyn Ian Guy Hamilton, DSC was an English film director. He directed 22 films from the 1950s to the 1980s, including four James Bond films.