Joly is a township in the Almaguin Highlands region of Parry Sound District of the Canadian province of Ontario.
The township has no named communities within its boundaries; all addresses in the township are rural routes assigned to the adjacent communities of South River, Sundridge, Hartfell or Pevensey.
The South River-Sundridge District Airport is in Joly.
In the 2021 Census of Population conducted by Statistics Canada, Joly had a population of 293 living in 127 of its 155 total private dwellings, a change of -3.6% from its 2016 population of 304.
This Northern Ontario geographical article is a stub.