Ernie Tate (24 May 1934 – 5 February 2021) was a long-standing supporter and leading member of Trotskyist groups in Canada and the United Kingdom and a founder in the 1960s of the International Marxist Group and Vietnam Solidarity Campaign in Britain. Born on Shankhill Road, in Belfast, Northern Ireland to an Ulster Protestant family, he received little formal education, leaving school at 14 to work at the Belfast Flour Mills as an apprentice machine attendant. Tate was sent to British Columbia in the early 1960s, tasked with consolidating the quarrelling factions of the LSA's Vancouver branch.