There are at least 5 cities named Ontario in the entire world. The following map and table contain general information about these cities.
| # | Country | Region | City | Coordinates |
|---|---|---|---|---|
| 1 | United States | California | Ontario | 34.063, -117.651 |
| 2 | United States | Oregon | Ontario | 44.027, -116.963 |
| 3 | United States | Wisconsin | Ontario | 43.726, -90.592 |
| 4 | United States | Ohio | Ontario | 40.76, -82.59 |
| 5 | United States | New York | Ontario | 43.221, -77.283 |