| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oakleigh | city | State of Victoria | Australia | -37.9 | 145.1 | 374 | 236516 |
| Oakleigh East | city | State of Victoria | Australia | -37.9 | 145.1166667 | 406 | 236516 |
| Oakleigh North | city | State of Victoria | Australia | -37.8833333 | 145.1166667 | 423 | 236516 |
| Oakleigh South | city | State of Victoria | Australia | -37.9 | 145.1 | 374 | 236516 |
| Oakvale | city | State of Victoria | Australia | -35.9166667 | 143.5666667 | 324 | 331 |
| Ocean Grove | city | State of Victoria | Australia | -38.2666667 | 144.5333333 | 3 | 6232 |
| Officedale | city | State of Victoria | Australia | -38.0833333 | 145.4166667 | 416 | 7845 |
| Officer | city | State of Victoria | Australia | -38.0666667 | 145.4166667 | 416 | 7845 |
| Old Longwood | city | State of Victoria | Australia | -36.8166667 | 145.45 | 646 | 322 |
| Old Tyabb | city | State of Victoria | Australia | -38.3 | 145.1833333 | 3 | 9421 |
| Olinda | city | State of Victoria | Australia | -37.85 | 145.3666667 | 964 | 46959 |
| Omeo | city | State of Victoria | Australia | -37.1 | 147.6 | 2424 | 56 |
| Ondit | city | State of Victoria | Australia | -38.25 | 143.6333333 | 508 | 823 |
| Orbost | city | State of Victoria | Australia | -37.7 | 148.45 | 88 | 75 |
| Orford | city | State of Victoria | Australia | -38.2166667 | 142.1 | 157 | 395 |
| Orrvale | city | State of Victoria | Australia | -36.4166667 | 145.45 | 416 | 9040 |
| Osbornes Flat | city | State of Victoria | Australia | -36.3166667 | 146.8833333 | 751 | 907 |
| Osborns Flat | city | State of Victoria | Australia | -36.3166667 | 146.8833333 | 751 | 907 |
| Oswald | city | State of Victoria | Australia | -37.4833333 | 143.7833333 | 1692 | 6840 |
| Otway | city | State of Victoria | Australia | -38.6666667 | 143.5 | 1010 | 243 |
| Otway Shire | city | State of Victoria | Australia | -38.6666667 | 143.5 | 1010 | 243 |
| Outtrim | city | State of Victoria | Australia | -38.4833333 | 145.7666667 | 449 | 1540 |
| Ouyen | city | State of Victoria | Australia | -35.0666667 | 142.3166667 | 236 | 28 |
| Ovens | city | State of Victoria | Australia | -36.5833333 | 146.7666667 | 990 | 406 |
| Ovens Vale | city | State of Victoria | Australia | -36.5833333 | 146.7666667 | 990 | 406 |
| Oxley | city | State of Victoria | Australia | -36.45 | 146.3666667 | 498 | 2179 |
| Ozenkadnook | city | State of Victoria | Australia | -36.85 | 141.3333333 | 495 | 61 |
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