Martyn Noel Geoffrey King (23 August 1937 – 25 December 2019) was an English professional footballer who played as a forward.
King signed for Colchester United from local side Pegasus in 1956, but it was not until 1959, when he was on the verge of completing National Service that he was available for every game.
He responded by equalling Kevin McCurley's 30 League goals in a season club record including a trio of hat tricks.
On 30 December 1961, after a 4–1 Boxing Day defeat at Bradford City, United set their club record victory in the return fixture, with both King and his strike partner Bobby Hunt scoring four goals each as the Colchester ran out 9–1 winners.
In December 2008, King was due to be Colchester's guest for a game with Scunthorpe United, but a ruptured aortic aneurysm left him seriously ill with severe bleeding to his stomach.