Ian Gordon Arthur Collier (25 January 1943 – 1 October 2008) was a British actor.^[1]

He appeared on stage in Tony Richardson's production of Hamlet in 1969 at London's Roundhouse, and at the Lunt-Fontanne theater in New York City.^[2][3] Other repetory work includes appearances in Barrow-in-Furness and Liverpool, as well as the Royal Shakespeare Company.^[4] He also appeared in various television programmes including Rentaghost, Hi-de-Hi! and Howards' Way as well as in the Doctor Who serial The Time Monster.^[5]

He portrayed the villain Omega in the Fifth Doctor serial Arc of Infinity and later in the Big Finish Productions audio drama Omega.^[6] He played Bernice Summerfield's father, Isaac Summerfield, in Death and the Daleks, and he guest starred in the Big Finish Productions Doctor Who audio drama Excelis Decays.^[7][8] Among his other television appearances was a guest part in an episode of Are You Being Served? in 1985.^[9]

His film credits included roles in Hamlet (1969), The Next Man (1976), A Nightingale Sang in Berkeley Square (1979) and Heritage Africa (1989).^[10]

Collier died on 1 October 2008 of unspecified causes.