Peter McGill (August 1789 – September 28, 1860) was a Scots-Quebecer businessman who served as the second mayor of Montreal, Canada East from 1840 to 1842.

He was born Peter McCutcheon in the village of Creebridge, Wigtownshire (now Dumfries and Galloway) in Scotland.

In 1821, he changed his name when he became the heir of his uncle John McGill, at the latter's request.

On his passing in 1860, Peter McGill was interred in Montreal's Mount Royal Cemetery.

McGill had three sons with two surviving him: This article about a mayor in Quebec is a stub.