Trevor Pettit (born March 14, 1951) is a former politician in Ontario, Canada. He was a Progressive Conservative member of the Ontario legislature from 1995 to 1999 who represented the riding of Hamilton Mountain.

Pettit was born in Hamilton. He worked as a sales director for a manufacturing company in neighbouring Dundas which is now part of Hamilton. He is married with two children.^[1]

He was elected to the provincial legislature in the 1995 provincial election, defeating Liberal Marie Bountrogianni and incumbent New Democrat Brian Charlton finished third.^[2] He sat in the backbenches of Mike Harris's government during his time in the legislature. He advocated the amalgamation of Hamilton with neighbouring municipalities, a policy initiative which was passed during the Harris government's second term.^[3]

Pettit lost to Bountrigianni by about 2,500 votes in the 1999 provincial election.^[4]

In 2010, he attempted to unseat incumbent Scott Duvall for the position of Hamilton city councillor in Ward Seven, but was unsuccessful.^[5]

As of 2010, Pettit works as a government relations-energy consultant. He also an occasional guest columnist for local Hamilton newspapers.^[6][7] In 2014, he retired to Costa Rica.