David Hemblen (16 September 1941 – 16 November 2020) was an English–Canadian actor who frequently worked in Canadian film, television and theatre born in London, grew up in Toronto, Ontario. He is known for his role as George in La Femme Nikita, Customs inspector in Atom Egoyan's Exotica, Lord Dread/Lyman Taggert in Captain Power and the Soldiers of the Future, Detective Dick Hargrove in T. and T. and as Inspector Winterguild in TekWar. He is also known for his role as Johnathan Doors in Earth: Final Conflict and for voicing the character of Magneto in the X-Men animated series from 1992 to 1997.

Early life and education
Born in London, England, Hemblen grew up in Toronto, Ontario, where he pursued a classical education before turning to theatre. He received an M.A. in English and was working towards a Ph.D. in medieval studies when he was spotted during a rehearsal of a university production by Clifford Williams of the Royal Shakespeare Company. Hemblen was offered a season at Toronto's Royal Alexandra Theatre. In the 1960s, Hemblen was a political activist and member of the Young Socialists.