John Matthew McCoy (born 9 March 1950) is an English bass guitarist, who is best known for his work with Ian Gillan and Mammoth as well as numerous other bands and sessions since the late 1960s.
Along with guitarist Vic Elmes and ZZebra colleague Liam Genockey on drums, McCoy can also be heard playing in the intro and end titles theme of the 1970s cult TV series Space: 1999.
In 1966 he responded to an advertisement in the Yorkshire Post newspaper for a guitarist to join a band called Mamas Little Children who were about to begin touring Germany.
On his return to Britain, he went to London where he found work as a session musician with former Drifters member Clyde McPhatter touring the UK.
Within a month of their formation the band had recorded their first album, Gillan, and they made their live debut at the Reading Festival on 16 August 1978.
In late 1986, McCoy recruited session drummer Vinnie "Tubby" Reed, guitarist "Big" Mac Baker and vocalist Nicky Moore to form a band initially called Dinosaur.