Frontenac
- Abendroth & Root Manufacturing Co
- Alfred Billings Street
- Central Frontenac, Ontario
- Château Frontenac
- Dominion Motors Frontenac
- Fort Frontenac
- Frontenac (1912–1973 provincial electoral district)
- Frontenac (Montreal Metro)
- Frontenac (Ontario electoral district)
- Frontenac (Ontario provincial electoral district)
- Frontenac (Quebec electoral district)
- Frontenac (grape)
- Frontenac (marque)
- Frontenac (provincial electoral district)
- Frontenac Axis
- Frontenac County, Ontario
- Frontenac County, Quebec
- Frontenac Islands, Ontario
- Frontenac Lake (Milieu River)
- Frontenac Motor Corporation
- Frontenac National Park
- Frontenac Provincial Park
- Frontenac Secondary School
- Frontenac State Park
- Frontenac, Florida
- Frontenac, Gironde
- Frontenac, Kansas
- Frontenac, Lot
- Frontenac, Minnesota
- Frontenac, Missouri
- Frontenac, Quebec
- Louis de Buade de Frontenac
- North Frontenac, Ontario
- PS Frontenac
- South Frontenac, Ontario
- Texaco