Frontenac may refer to:
People Louis de Buade de Frontenac, Governor of New France
Places Canada Quebec Château Frontenac, hotel in Quebec City Frontenac, Quebec Frontenac County, Quebec Frontenac (Montreal Metro), Montreal Metro station Frontenac National Park (Parc national de Frontenac) Frontenac (provincial electoral district), Quebec provincial electoral district Frontenac (Quebec federal electoral district), former federal electoral district Frontenac (1912–1973 provincial electoral district), former Quebec provincial electoral district Frontenac Lake (Milieu River), Lac-Ashuapmushuan, RCM Le Domaine-du-Roy, Saguenay-Lac-Saint-Jean
Ontario Fort Frontenac, French fort and trading post located in what is now Kingston, Ontario Frontenac County: Township of Central Frontenac Township of Frontenac Islands Township of North Frontenac Township of South Frontenac Frontenac Provincial Park, a provincial park near Kingston, Ontario Frontenac Public School, Burlington, Ontario Frontenac Secondary School, Kingston, Ontario Frontenac (Ontario electoral district), former federal electoral district Frontenac (Ontario provincial electoral district), former provincial electoral district
France Frontenac, Gironde Frontenac, Lot
United States Frontenac, Kansas Frontenac, Minnesota Frontenac State Park Frontenac, Missouri Frontenac, Florida
Automotive Abendroth & Root Manufacturing Co, produced automobiles under the name Frontenac 1906-1913 Frontenac Motor Corporation, a joint racing-car venture of Louis and Gaston Chevrolet 1916-1921 Dominion Motors Frontenac, a division of Durant Motors that built and sold automobiles in Canada 1931-1933 Frontenac (marque), an automobile introduced in 1960 by Ford Motor Company of Canada
Others Frontenac (grape) Frontenac Axis, a geological feature in Canada and the United States Lac Frontenac or Lac de Frontenac, an old name for Lake Ontario PS Frontenac, first paddle steamer launched on the Great Lakes McColl-Frontanac Oil Company, a Canadian company acquired by Texaco in 1956 Frontenac: or The Atotarho of the Iroquois, a poem by Alfred Billings Street Kingston Frontenacs, a major junior hockey team in the Ontario Hockey League Frontenac Company, an American private equity firm