John Graham Davies is an actor and writer who played four roles in Coronation Street:
- A Police Inspector who investigated Martin Platt and Jenny Bradley's car crash in 1987
- Det. Insp. Jordan who investigated the disappearance of Rita Fairclough in 1989
- A Police Sergeant in the programme's live fortieth anniversary episode in 2000
- The Judge presiding over Peter Barlow's trial for the murder of Tina McIntyre in October 2014.
During his early career in the 1970s he was a founder member of the Canadian National Theater, appearing in Troilus and Cressida, Camino Real and toured nationally in Hamlet. He was also a regular voice on BBC4 radio. Television roles dating back to the 1980s include Chessgame, Traveling Man, Harry, Cracker, Emmerdale, Hetty Wainthropp Investigates, Cold Feet, Hollyoaks, The Bill, Doctors and Casualty.