Samuel Lawrence (August 16, 1879 – October 25, 1959) was a Canadian politician and trade unionist.Lawrence was born in Somerset, England and went to work in a quarry at the age of 12 and became a shop steward in the mason's union at the age of 17. He entered politics running for election in Battersea in London. Known as "Mr. Labour", Sam Lawrence was an alderman, controller, and the Mayor of Hamilton from 1944 to 1949.