Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...

is a province in east-central Canada. Ontario may also refer ro:

Places

Belize

Ontario, Belize Ontario is a village in the Cayo District of central interior Belize. The village is in an agricultural region with the most frequent crops being citrus and banana. It is one of 192 municipalities administered at the village level in the country f ...

, a village in

Cayo District Cayo is a district located in the west part of Belize, and it contains the capital, Belmopan. It is the most extensive, second-most populous and third-most densely populated of the six districts of Belize. The district's capital is the town of S ...

, Belize

Canada

Ontario County, Ontario Ontario County was the name of two historic counties in the Canadian province of Ontario. Both counties were located in approximately the same area and existed on-and-off between 1792 and 1974. Their primary modern successor is the Regional Mun ...

, the name of several historic counties *

Ontario (federal electoral district) Ontario was a federal electoral district represented in the House of Commons of Canada from 1925 to 1997. It was located in the province of Ontario. This riding was created in 1924 from Ontario South riding. It initially consisted of the tow ...

, a defunct federal electoral district *

Ontario (provincial electoral district) Ontario is the southernmost province of Canada. Located in Central Canada, Ontario is the country's most populous province. As of the 2021 Canadian census, it is home to 38.5% of the country's population, and is the second-largest province by ...

, a defunct provincial electoral district *

Ecclesiastical Province of Ontario The Ecclesiastical Province of Ontario is one of four ecclesiastical provinces in the Anglican Church of Canada. It was established in 1912 out of six dioceses of the Ecclesiastical Province of Canada located in the civil Provinces and territories ...

, an Anglican province

United States

Ontario, California Ontario is a city in southwestern San Bernardino County, California, United States, east of downtown Los Angeles and west of downtown San Bernardino, the county seat. Located in the western part of the Inland Empire metropolitan area, it lies ...

* Ontario, Illinois * Ontario, Indiana * Ontario, Iowa *

Ontario, New York Ontario is a Administrative divisions of New York#Town, town in the northwest corner of Wayne County, New York, Wayne County, New York (state), New York, United States. The population was 9,778 at the 2000 census, and 10,136 at the 2010 census. ...

* Ontario (CDP), New York *

Ontario County, New York Ontario County is a county in the U.S. state of New York. As of the 2020 United States census, the population was 112,458. The county seat is Canandaigua. The county is part of the Finger Lakes region of the state. Ontario County is pa ...

Ontario, Ohio Ontario is a city in Richland County, Ohio, United States. As of the 2020 census, the city had a population of 6,656. It is part of the Mansfield metropolitan area. It was founded in 1834 on the western edge of the Allegheny Plateau, just west o ...

Ontario, Oregon Ontario is the largest city in Malheur County, Oregon, Malheur County, Oregon, United States. It lies along the Snake River at the Idaho border. The population was 11,645 at the 2020 censusThe city is the largest community in the region of far ea ...

* Ontario, Wisconsin * Ontario Township (disambiguation)

Lakes

Lake Ontario Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York (state), New York. The Canada–United Sta ...

, one of the Great Lakes on the boundary between the Canadian province of Ontario and the U.S. state of New York *

Ontario Lacus Ontario Lacus is a lake composed of methane, ethane and propane near the south pole of Saturn's moon Titan. Its character as a hydrocarbon lake was confirmed by observations from the '' Cassini'' spacecraft, published in the 31 July 2008 edit ...

, a dark feature near the south pole of Saturn's moon Titan

Ships

* , several Canadian naval vessels ** * , several British naval vessels ** , British warship sunk during the American Revolution * , several American naval vessels

Other uses

* Ontario (computer virus) * Ontario (processor), a computer APU from AMD *

Ontario International Airport Ontario International Airport is an international airport east of downtown Ontario, California, Ontario, in San Bernardino County, California, United States, about east of downtown Los Angeles and west of downtown San Bernardino. It is ow ...

(ONT) in Ontario, California *

Ontario Motor Speedway Ontario Motor Speedway was a motorsport venue located in Ontario, California. It was the first and only automobile racing facility built to accommodate major races sanctioned by all of the four dominant racing sanctioning bodies: United States Au ...

, a 2.5-mile racetrack in Ontario, California * 45554 Ontario, a British

LMS Jubilee Class The London, Midland and Scottish Railway (LMS) Jubilee Class is a class of steam locomotive designed for main line passenger work. 191 locomotives were built between 1934 and 1936. They were built concurrently with the similar looking LMS Stani ...

locomotive *

Ontario Bus Industries Orion International was a North American bus manufacturer based in Mississauga, Ontario, Canada operated a subsidiary of Daimler Buses North America, a division of German automaker Mercedes-Benz Group, Daimler AG. The company had its main manu ...

, the former name of Canadian bus manufacturer Orion Bus Industries