| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| O'Bil Bil | city | State of Queensland | Australia | -25.5166667 | 151.2166667 | 692 | 65 |
| Oakenden | city | State of Queensland | Australia | -21.3 | 149.0166667 | 492 | 563 |
| Oakey | city | State of Queensland | Australia | -27.4333333 | 151.7166667 | 1702 | 689 |
| Oakhurst | city | State of Queensland | Australia | -25.5166667 | 152.6333333 | 36 | 1790 |
| Oaktree | city | State of Queensland | Australia | -25.85 | 148.65 | 1473 | 19 |
| Oakview | city | State of Queensland | Australia | -26.0833333 | 152.3333333 | 643 | 131 |
| Oakwood | city | State of Queensland | Australia | -24.8666667 | 152.3 | 39 | 26316 |
| Oaky | city | State of Queensland | Australia | -27.4333333 | 151.7166667 | 1702 | 689 |
| Obi Obi | city | State of Queensland | Australia | -26.65 | 152.8 | 921 | 2466 |
| Ogmore | city | State of Queensland | Australia | -22.6166667 | 149.65 | 131 | 258 |
| Okuloo | city | State of Queensland | Australia | -21.1333333 | 148.5666667 | 1056 | 215 |
| Old Bribie | city | State of Queensland | Australia | -27.0447222 | 153.1322222 | 3 | 7612 |
| Old Glenroy | city | State of Queensland | Australia | -20.5333333 | 147.1333333 | 610 | 5 |
| Old Mingoola | city | State of Queensland | Australia | -28.9833333 | 151.5166667 | 1571 | 299 |
| Old Talgai | city | State of Queensland | Australia | -28.0166667 | 151.7666667 | 1624 | 299 |
| Oman-Ama | city | State of Queensland | Australia | -28.4 | 151.3 | 1236 | 61 |
| One Mile | city | State of Queensland | Australia | -27.6333333 | 152.75 | 351 | 40424 |
| Oolbun | city | State of Queensland | Australia | -19.3333333 | 146.9333333 | 190 | 354 |
| Oondooroo | city | State of Queensland | Australia | -22.1666667 | 143.1 | 656 | 5 |
| Oonoobah | city | State of Queensland | Australia | -19.3 | 146.8166667 | 147 | 58599 |
| Oonooie | city | State of Queensland | Australia | -21.4666667 | 149.2333333 | 223 | 892 |
| Oonoonba | city | State of Queensland | Australia | -19.3 | 146.8166667 | 147 | 58599 |
| Oontoo | city | State of Queensland | Australia | -27.65 | 141.0166667 | 150 | 0 |
| Oorindi | city | State of Queensland | Australia | -20.6833333 | 141.0666667 | 869 | 5 |
| Ootann | city | State of Queensland | Australia | -17.45 | 144.6333333 | 1758 | 47 |
| Opalton | city | State of Queensland | Australia | -23.25 | 142.7666667 | 521 | 5 |
| Opalville | city | State of Queensland | Australia | -24.7833333 | 142.7333333 | 629 | 0 |
| Orallo | city | State of Queensland | Australia | -26.2666667 | 148.55 | 1624 | 19 |
| Orange Grove | city | State of Queensland | Australia | -27.5666667 | 153.0333333 | 183 | 152183 |
| Orkabie | city | State of Queensland | Australia | -21.8166667 | 149.3666667 | 190 | 56 |
| Ormeau | city | State of Queensland | Australia | -27.7833333 | 153.2666667 | 229 | 6088 |
| Ormiston | city | State of Queensland | Australia | -27.5166667 | 153.25 | 3 | 47659 |
| Ottaba | city | State of Queensland | Australia | -27.15 | 152.3833333 | 685 | 439 |
| Owanyilla | city | State of Queensland | Australia | -25.6666667 | 152.6 | 49 | 244 |
| Owens Creek | city | State of Queensland | Australia | -21.0833333 | 148.7166667 | 751 | 442 |
| Oxford Park | city | State of Queensland | Australia | -27.4 | 152.9666667 | 249 | 154045 |
| Oxley | city | State of Queensland | Australia | -27.55 | 152.9833333 | 144 | 124162 |
| OʼBil Bil | city | State of Queensland | Australia | -25.5166667 | 151.2166667 | 692 | 65 |
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