Gillies is a township in the Canadian province of Ontario, located within the Thunder Bay District.

The township is part of the city of Thunder Bay's Census Metropolitan Area, and includes the communities of Hymers and South Gillies.

In the 2021 Census of Population conducted by Statistics Canada, Gillies had a population of 441 living in 186 of its 208 total private dwellings, a change of -7% from its 2016 population of 474.

With a land area of 92.68 km2 (35.78 sq mi), it had a population density of 4.8/km2 (12.3/sq mi) in 2021.

This Northern Ontario geographical article is a stub.