Keith Marsh (born 1926 in Blackpool, died 28th January 2013 in Hillingdon, London) had six different roles on Coronation Street:
- A Foreman at Ajax Engineering in June 1961
- George Chippendale in July 1966
- James Dawson, headmaster of Regent's Road school, who appeared in April 1972
- George Marsden, the uncle of Renee Roberts who attended her funeral in August 1980
- Pensioner/newspaper deliverer Harry Ashton between January and April 1988
- Uncle Mervin in September 1999.
He also appeared in the spin-off Turn out the Lights in 1967.
Best known for his recurring role as Jacko in the Thames Television sitcom Love Thy Neighbour between 1972 and 1976, his other credits include Over to William, Knight Errant Limited, The Odd Man, Maigret, Emergency-Ward 10, Family Solicitor, No Hiding Place, George and the Dragon, River Rivals, Z Cars, And Mother Makes Three, The New Avengers, The Professionals, All Creatures Great and Small, The Gaffer, My Cousin Rachel, Tucker's Luck, The Beiderbeck Affair, Casualty, Andy Capp, Never the Twain, The Bill, Birds of a Feather, London's Burning, Last of the Summer Wine, Dalziel and Pascoe, Peak Practice, Heartbeat, Barbara, The Royal, Doctors and The Worst Week of My Life.
Film roles include The Carringford School Mystery, The Gentle Trap, Othello, Daleks' Invasion Earth 2150 A.D., Quatermass and the Pit, All Neat in Black Stockings, Taste the Blood of Dracula and The Human Factor.
On stage, he appeared in productions of The Wages of Eve, Flight to Killgally, Simple Spymen, Man of La Mancha and for the Old Vic, Saint Joan, Uncle Vanya, Othello, The Crucible, Love for Love, Juno and the Paycock and A Flea in Her Ear.
