Noel Trevarthen (January 10, 1938 - December 3, 1999) was a New Zealander actor.

As a young man he moved to the UK and throughout the 1960s appeared in many British films and TV shows. These included Dixon of Dock Green, The Saint and The Vengeance of Fu Manchu (1967). He also had an uncredited role in The Beatles' A Hard Day's Night (1964). Although he moved to Australia and began to work in the industry there, he was back in the UK until the mid 1970s.