John Clarke (born April 14, 1932) is an American actor.
John Morrison Clarke (born July 29, 1948) is a comedian and writer. He was born in Palmerston North, New Zealand, but has lived in Australia since the 1970s. He is a regular actor and writer on Australian TV.
John Clarke is a Canadian political activist and the founder and leading figure of the Ontario Coalition Against Poverty. Originally from Britain, Clarke moved to London, Ontario in the 1980s where he was a factory worker. Upon becoming unemployed he founded the Unemployed Workers Union which ultimately led to the creation of OCAP.