| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Nairn | city | Ontario | Canada | 43.12 | -81.56 | 830 | 1732 |
| Nakina | city | Ontario | Canada | 50.18 | -86.70 | 1000 | 148 |
| Nanticoke | city | Ontario | Canada | 42.81 | -80.07 | 830 | 2508 |
| Napanee | city | Ontario | Canada | 44.25 | -76.95 | 262 | 9037 |
| Narrow Lake | city | Ontario | Canada | 51.22 | -92.78 | 1669 | 0 |
| Naughton | city | Ontario | Canada | 46.40 | -81.17 | 882 | 2242 |
| Navan | city | Ontario | Canada | 45.42 | -75.43 | 255 | 18762 |
| Nelles Corners | city | Ontario | Canada | 42.93 | -79.95 | 830 | 644 |
| Nemegos | city | Ontario | Canada | 47.72 | -83.20 | 1669 | 0 |
| Neustadt | city | Ontario | Canada | 44.08 | -81.00 | 958 | 1654 |
| New Bliss | city | Ontario | Canada | 44.80 | -75.97 | 400 | 1029 |
| New Dundee | city | Ontario | Canada | 43.35 | -80.54 | 1046 | 27478 |
| New Hamburg | city | Ontario | Canada | 43.38 | -80.71 | 1099 | 5482 |
| New Liskeard | city | Ontario | Canada | 47.50 | -79.67 | 830 | 7148 |
| New Market | city | Ontario | Canada | 44.06 | -79.45 | 830 | 91829 |
| New Sarum | city | Ontario | Canada | 42.78 | -81.08 | 830 | 2237 |
| New Toronto | city | Ontario | Canada | 43.60 | -79.50 | 246 | 151562 |
| Newark | city | Ontario | Canada | 43.25 | -79.07 | 262 | 6979 |
| Newboro | city | Ontario | Canada | 44.65 | -76.32 | 400 | 906 |
| Newburgh | city | Ontario | Canada | 44.33 | -76.87 | 387 | 3166 |
| Newbury | city | Ontario | Canada | 42.68 | -81.80 | 830 | 1172 |
| Newcastle | city | Ontario | Canada | 43.92 | -78.59 | 298 | 13701 |
| Newington | city | Ontario | Canada | 45.12 | -75.01 | 341 | 1508 |
| Newmarket | city | Ontario | Canada | 44.06 | -79.45 | 830 | 91829 |
| Newport | city | Ontario | Canada | 43.10 | -80.23 | 830 | 33190 |
| Newton | city | Ontario | Canada | 43.59 | -80.87 | 1246 | 3090 |
| Newtonville | city | Ontario | Canada | 43.94 | -78.49 | 830 | 4450 |
| Nezah | city | Ontario | Canada | 49.67 | -87.65 | 1118 | 0 |
| Niagara | city | Ontario | Canada | 43.25 | -79.07 | 262 | 6979 |
| Niagara Falls | city | Ontario | Canada | 43.10 | -79.05 | 830 | 55633 |
| Niagara-on-the-Lake | city | Ontario | Canada | 43.25 | -79.07 | 262 | 6979 |
| Nicholson | city | Ontario | Canada | 47.95 | -83.78 | 1669 | 0 |
| Nipigon | city | Ontario | Canada | 49.02 | -88.25 | 925 | 825 |
| Nipigon House | city | Ontario | Canada | 49.82 | -89.10 | 849 | 86 |
| Nixon | city | Ontario | Canada | 42.85 | -80.40 | 830 | 5015 |
| Nobel | city | Ontario | Canada | 45.42 | -80.10 | 830 | 757 |
| Nobleton | city | Ontario | Canada | 43.90 | -79.65 | 846 | 21288 |
| Noelville | city | Ontario | Canada | 46.13 | -80.43 | 830 | 396 |
| Norembega | city | Ontario | Canada | 48.98 | -80.72 | 974 | 0 |
| North Augusta | city | Ontario | Canada | 44.76 | -75.74 | 351 | 115 |
| North Bay | city | Ontario | Canada | 46.30 | -79.45 | 830 | 12961 |
| North Branch | city | Ontario | Canada | 48.85 | -94.18 | 1145 | 28 |
| North Buxton | city | Ontario | Canada | 42.31 | -82.22 | 830 | 1166 |
| North Caribou Lake First Nation | city | Ontario | Canada | 52.95 | -91.33 | 987 | 198 |
| North Gower | city | Ontario | Canada | 45.13 | -75.72 | 285 | 6132 |
| Northland Station | city | Ontario | Canada | 46.72 | -84.13 | 1099 | 0 |
| Northwood | city | Ontario | Canada | 42.49 | -82.06 | 830 | 304 |
| Norwich | city | Ontario | Canada | 42.98 | -80.60 | 849 | 768 |
| Norwood | city | Ontario | Canada | 44.38 | -77.98 | 830 | 3696 |
| Novar | city | Ontario | Canada | 45.45 | -79.25 | 1066 | 1330 |