a member of the Algonquian people of southern Ontario

the capital of Canada (located in southeastern Ontario across the Ottawa river from Quebec)

Ottawa is the capital of Canada and the country's fourth largest city, as well as the second largest city in the province of Ontario. It is located in the Ottawa Valley on the eastern edge of the province of Ontario, 400 kilometres (250 mi) north-east of Toronto and 190 kilometres (120 mi) west of Montreal. Ottawa lies on the banks of the Ottawa River, a major waterway that forms the border between Ontario and Quebec.

Ottawa (County of) was a federal and provincial electoral district in Quebec, Canada, that was represented in the Legislative Assembly of the Province of Canada from 1830 to 1867, in the Canadian House of Commons from 1867 to 1892, and in the Legislative Assembly of Quebec from 1867 to at least 1919.

Ottawa (City of) was a federal electoral district in the province of Ontario, Canada, that was represented in the Canadian House of Commons from 1867 to 1935.