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 Operative Stonemasons' Union at the age of 18.
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.
He was also President of the Stone Cutters' Union, Vice-President of the Hamilton Trades and Labour Council, and leader of the Co-operative Commonwealth Federation (CCF) Party in the Ontario legislature as well as Ontario CCF president in the early 1940s