There are various lists of communities in Ontario, grouped by status, type or location:

• List of census subdivisions in Ontario - local municipalities, First Nations reserves and settlements, unorganized areas
• List of cities in Ontario - places which are incorporated as cities
• List of francophone communities in Ontario - places which are designated as French language service areas due to having a significant minority or majority Franco-Ontarian population
• List of municipalities in Ontario - all incorporated municipalities in the province regardless of type
• List of population centres in Ontario - urban areas, without regard to municipal boundaries
• List of towns in Ontario - places which are incorporated as towns
• List of township municipalities in Ontario - places with the municipal status of township
• List of unincorporated communities in Ontario - places which are not incorporated, but exist as neighbourhoods or settlements inside larger municipal entities
• List of villages in Ontario - places which are incorporated as villages