John F. Brewin (born September 14, 1936) is a Canadian politician, who served as Member of Parliament for Victoria from 1988 to 1993.

Brewin first ran for federal office in 1984 against veteran PC incumbent Allan McKinnon.

McKinnon did not run again in the 1988 election, and Brewin won the riding easily over PC candidate Geoff Young.

In 2002, he attracted attention in the media and the party when he correctly predicted that NDP leader Alexa McDonough would step down that year.

He was on the board of the Toronto Community Housing Corporation and is currently a member of the General Synod of the Anglican Church of Canada.