Deans, Ontario can mean the following places:
- Deans, Parry Sound District, Ontario, a ghost town located in the geographic township of Laurier, Parry Sound District, Ontario, on Canadian National Railways line, between South River and Trout Creek, east of Highway 11.
- Deans Township, Ontario a geographic township in Sudbury District.
- Deans, Seneca Township, Haldimand County, Ontario see Indiana, Ontario.