Mavis Wilson is a former politician in Ontario, Canada. She was a Liberal member of the Legislative Assembly of Ontario from 1987 to 1990, and served as a cabinet minister in the government of David Peterson.

Wilson began her political career as a school trustee, served on the Dufferin County Board of Education for eleven years (including three as chair).

She was elected to the Ontario legislature in the 1987 provincial election, defeating her Progressive Conservative opponent by almost 6,000 votes in the riding of Dufferin—Peel , an area normally considered safe for the Progressive Conservative Party. David Peterson's Liberals won a landslide majority in this election, and Wilson was appointed as a Minister without Portfolio responsible for Women's Issues on September 10, 1987. She held this position until August 2, 1989.

The Liberals were unexpectedly defeated by the New Democratic Party in the 1990 provincial election. Wilson lost her seat by 572 votes to David Tilson of the Progressive Conservative Party of Ontario. She attempted to regain the seat in the 1995 provincial election, but lost by almost 15,000 votes amid a Progressive Conservative majority government victory. She has not sought a return to the legislature since this time.