Halton Hills is a town in the Regional Municipality of Halton, located in the northwestern end of the Greater Toronto Area, Ontario, Canada with a population of 62,951 (2021).

The Regional Municipality of Halton, or Halton Region, is a regional municipality in Ontario, Canada, located in the Golden Horseshoe of Southern Ontario. It comprises the city of Burlington and the towns of Oakville, Milton, and Halton Hills. Policing in the Region is provided by the Halton Regional Police Service. The regional council's headquarters are located in Oakville. Burlington, Oakville, and Milton are largely urban and suburban, while Halton Hills is more rural.