George Graham Johnston (April 15, 1882 – May 29, 1960) was a politician in Ontario, Canada.
He was a Progressive Conservative member of the Legislative Assembly of Ontario from 1943 to 1960 who represented the riding of Simcoe Centre.
Johnston was born in Minesing, Ontario, he was a manufacturer.
[1] Johnston died in office in 1960 from a heart attack.
[2] Johnston ran as the Progressive Conservative candidate in the 1943 Ontario general election.