Margaret Rutherford (Cinema films Murder at the Gallop, Murder Most Foul and Murder Ahoy) 1963-1964 (Charles Tingwell played Inspector Craddock).
Helen Hayes (TV films A Carribean Mystery and Murder with Mirrors) 1983-1985
Joan Hickson (Miss Marple) 1984-1992
Gerald McEwan (Marple) 2004-2007
Julia McKenzie (Marple) 2008-
June Whitfield played her on radio.
Austen Trevor (film 1931-34)
Albert Finney (Murder on the Orient Express 1975)
Peter Ustinov (Cinema Films 1978-1988)
David Suchet (Poirot 1989-)
John Moffat played him on radio
Captain Arthur Hastings was played by Hugh Fraser, previously Jonathan Cecil, previously Richard Cooper.
Cheif Inspector Japp was played by Phillip Jackson and, previously, David Suchet.
Miss (Felicity) Lemon was played by Pauline Moran and previously Angela Easterling
Ariadne Oliver was played by Zoe Wannamaker, and previously Jean Stapleton
Tuppence and Tommy Beresford
Tommy is played by James Warwick in Partners in Crime
Tuppence was played by Francesca Allen in Partners in Crime.