| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oceanic | city | Alaska | United States | 60.21 | -147.82 | 196 | |
| Ohogamiut | city | Alaska | United States | 61.57 | -161.86 | 16 | |
| Oknagamut (historical) | city | Alaska | United States | 61.56 | -160.07 | 49 | |
| Okręg Skagway | city | Alaska | United States | 59.46 | -135.31 | 830 | |
| Old Bettles (historical) | city | Alaska | United States | 66.91 | -151.68 | 830 | |
| Old Harbor | city | Alaska | United States | 57.20 | -153.30 | 0 | |
| Old Iliamna | city | Alaska | United States | 59.74 | -153.88 | 196 | |
| Old Kasaan | city | Alaska | United States | 55.43 | -132.38 | 0 | |
| Old Kealavik (historical) | city | Alaska | United States | 61.00 | -164.75 | 3 | |
| Old Kotzebue | city | Alaska | United States | 66.83 | -161.00 | 13 | |
| Old McGrath | city | Alaska | United States | 62.97 | -155.58 | 331 | |
| Old Minto | city | Alaska | United States | 64.89 | -149.17 | 305 | |
| Old Rampart | city | Alaska | United States | 67.16 | -141.67 | 830 | |
| Old Salmon Village | city | Alaska | United States | 66.57 | -142.56 | 830 | |
| Old Tyonek (historical) | city | Alaska | United States | 61.04 | -151.28 | 0 | |
| Old Valdez | city | Alaska | United States | 61.12 | -146.27 | 13 | |
| Old Village (historical) | city | Alaska | United States | 60.96 | -154.04 | 1253 | |
| Olnes | city | Alaska | United States | 65.07 | -147.67 | 830 | |
| Onihitsk (historical) | city | Alaska | United States | 57.15 | -152.87 | 0 | |
| Ophir | city | Alaska | United States | 63.14 | -156.52 | 830 | |
| Orca | city | Alaska | United States | 60.58 | -145.72 | 846 | |
| Oscarville | city | Alaska | United States | 60.72 | -161.77 | 3 | |
| Oskawalik | city | Alaska | United States | 61.74 | -158.19 | 291 | |
| Ostrovski (historical) | city | Alaska | United States | 59.58 | -151.50 | 0 | |
| Ouzinkie | city | Alaska | United States | 57.92 | -152.50 | 0 | |
| Oyak (historical) | city | Alaska | United States | 59.79 | -161.95 | 3 |