| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Аджакс | city | Ontario | Canada | 43.85 | -79.02 | 295 | 77112 |
| Амбрен | city | Ontario | Canada | 45.27 | -75.29 | 203 | 7646 |
| Анкастер | city | Ontario | Canada | 43.23 | -79.98 | 830 | 45583 |
| Арнпрајор | city | Ontario | Canada | 45.44 | -76.36 | 314 | 12378 |
| Арора | city | Ontario | Canada | 44.00 | -79.47 | 905 | 87455 |
| Атава | city | Ontario | Canada | 45.42 | -75.70 | 246 | 210946 |