Charles John Mahoney (June 20, 1940 – February 4, 2018) was an English-American actor of stage, film, and television.

Born in Blackpool, England, Mahoney emigrated to the United States aged 18 and started his acting career on the stage in 1977, and moved into film in 1980. He was best known for playing the blue-collar patriarch Martin Crane in the American sitcom Frasier, which aired on NBC from 1993 to 2004. In addition to his film and television work, Mahoney also worked as a voice actor and was particularly passionate about his stage work on Broadway and in Chicago theatre.