Georgian Bay in the context of "Algonquin Park"

Lake Huron (/ˈhjʊərɒn, -ən/ HURE-on, -⁠ən) is one of the five Great Lakes of North America. It is shared on the north and east by the Canadian province of Ontario and on the south and west by the U.S. state of Michigan. The name of the lake is derived from early French explorers who named it for the indigenous people they knew as Huron (Wyandot) inhabiting the region.Hydrologically, Lake Huron comprises the eastern portion of Lake Michigan–Huron, having the same surface elevation as Lake Michigan, to which it is connected by the 5-mile-wide (8.0 km), 20-fathom-deep (120 ft; 37 m) Straits of Mackinac. Combined, Lake Michigan–Huron is the largest freshwater lake by area in the world. The Huronian glaciation was named from evidence collected from the Lake Huron region. The northern parts of the lake include the North Channel and Georgian Bay. Saginaw Bay is located in the southwest corner of the lake. The main inlet is the St. Marys River from Lake Superior, and the main outlet is through the St. Clair River toward Lake Erie. Lake Huron has a fairly large drainage basin covering parts of Michigan and Ontario. Water flows through Lake Huron faster than the other Great Lakes with a retention time of only 22 years.

The Golden Horseshoe (French: Fer à cheval doré) is a secondary region of Southern Ontario, Canada, which lies at the western end of Lake Ontario, with outer boundaries stretching south to Lake Erie and north to Lake Scugog, Lake Simcoe and Georgian Bay of Lake Huron. The region is the most densely populated and industrialized in Canada. Based on the 2021 census, with a population of 7,759,635 people in its core and 9,765,188 in its greater area, the Golden Horseshoe accounts for over 20 percent of the population of Canada and more than 54 percent of Ontario's population. The population of the greater area is estimated to have exceeded 11,000,000 people in 2024. The Golden Horseshoe is part of the Quebec City–Windsor Corridor, itself part of the Great Lakes megalopolis.

The core of the Golden Horseshoe starts from Niagara Falls at the eastern end of the Niagara Peninsula bordering the United States via New York and extends west, wrapping around the western end of Lake Ontario at Hamilton and then turning northeast to Toronto (on the northwestern shore of Lake Ontario), before finally terminating at Clarington in Durham Region. The term Greater Golden Horseshoe is used to describe a broader region that stretches inland from the core to the area of the Trent–Severn Waterway, such as Peterborough, in the northeast, to Barrie and Lake Simcoe in the north, and to the Grand River area, which includes cities such as Brantford and Guelph, to the west. The extended region's area covers approximately 33,500 km (13,000 sq mi), out of this, 7,300 km (2,800 sq mi) or approximately 22 percent of the area is covered by the environmentally protected Greenbelt. The Greater Golden Horseshoe forms the neck of the Ontario Peninsula.

The North Channel is the body of water along the north shore of Lake Huron, in the Canadian province of Ontario and the state of Michigan in the United States of America. It stretches approximately 160 nautical miles (300 km) and is bordered on the east by Georgian Bay, on the west by the St. Marys River, to the north by the eastern Algoma District and part of the Sudbury District, and to the south by the islands of Manitoulin, Cockburn, Drummond and St. Joseph. At its widest point it is over 30 km (20 miles) wide.

In addition to Georgian Bay, the North Channel is connected to the main body of Lake Huron by the False Detour Channel and the Mississagi Strait, which separate the above-noted islands.

Northern Ontario is a primary geographic and quasi-administrative region of the Canadian province of Ontario, the other primary region being Southern Ontario. Most of the core geographic region is located on part of the Superior Geological Province of the Canadian Shield, a vast rocky plateau located mainly north of Lake Huron (including Georgian Bay), the French River, Lake Nipissing, and the Mattawa River. The statistical region extends south of the Mattawa River to include all of the District of Nipissing. The southern section of this district lies on part of the Grenville Geological Province of the Shield which occupies the transitional area between Northern and Southern Ontario.

The extended federal and provincial quasi-administrative regions of Northern Ontario have their own boundaries even further south in the transitional area that vary according to their respective government policies and requirements. Ontario government departments and agencies such as the Growth Plan for Northern Ontario and the Northern Ontario Heritage Fund Corporation define Northern Ontario as all areas north of, and including, the districts of Parry Sound and Nipissing for political purposes, and the federal but not the provincial government also includes the district of Muskoka.

The eastern coast of the Jutland Peninsula, consisting of Danish Jutland and German Schleswig-Holstein features a type of narrow bay called Förde (plural: Förden) in German and fjord (plural fjorde) in Danish. These bays are of glacial origin, but the glacial mechanics were different from those of Norwegian Fjords and also from those of Swedish and Finnish Fjards. Inlets more similar to these are also found on the peninsulas of the Green bay and Georgian bay, and on Manitoulin island, and eastern Long island.

The words Förde, fjord and fjard are of the same origin as the English word firth, but today there are differences in the meaning between firth (Förde) and fjord in general.

Eastern Ojibwe (also known as Ojibway, Ojibwa) is a dialect of the Ojibwe language spoken north of Lake Ontario and east of Georgian Bay in Ontario, Canada. Eastern Ojibwe-speaking communities include Rama and Curve Lake. Ojibwe is an Algonquian language.

Ottawa or Odawa is a dialect of the Ojibwe language spoken by the Odawa people in southern Ontario in Canada, and northern Michigan in the United States. Descendants of migrant Ottawa speakers live in Kansas and Oklahoma. The first recorded meeting of Ottawa speakers and Europeans occurred in 1615 when a party of Ottawas encountered explorer Samuel de Champlain on the north shore of Georgian Bay. Ottawa is written in an alphabetic system using Latin letters, and is known to its speakers as Nishnaabemwin 'speaking the native language' or Daawaamwin 'speaking Ottawa'.

Ottawa is one of the Ojibwe dialects that has undergone the most language change, although it shares many features with other dialects. The most distinctive change is a pervasive pattern of vowel syncope that deletes short vowels in many words, resulting in significant changes in their pronunciation. This and other innovations in pronunciation, in addition to changes in word structure and vocabulary, differentiate Ottawa from other dialects of Ojibwe.

Southwestern Ontario (census population 2,796,367 in 2021) is a secondary region of Southern Ontario in the Canadian province of Ontario. It occupies most of the Ontario Peninsula, bounded by Lake Huron (including Georgian Bay) to the north and northwest, the St. Clair River, Lake St. Clair, and Detroit River to the west, and Lake Erie to the south. To the east, on land, Southwestern Ontario is bounded by Central Ontario and the Golden Horseshoe. It borders the United States via Michigan.