| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Siberia | city | State of Western Australia | Australia | -30.2333333 | 120.95 | 1643 | 42 |
| Sidebottom | city | State of New South Wales | Australia | -31.9833333 | 152.4833333 | 3 | 1446 |
| Sidebottom Creek | city | State of New South Wales | Australia | -31.9833333 | 152.4833333 | 3 | 1446 |
| Sidmouth | city | State of Tasmania | Australia | -41.2166667 | 146.9 | 3 | 5196 |
| Sidonia | city | State of Victoria | Australia | -37.1666667 | 144.55 | 1427 | 1546 |
| Silent Grove | city | State of Queensland | Australia | -20.9833333 | 148.8 | 232 | 593 |
| Silent Grove | city | State of New South Wales | Australia | -29.1166667 | 151.6666667 | 2552 | 117 |
| Silkwood | city | State of Queensland | Australia | -17.75 | 146.0333333 | 196 | 1811 |
| Silvan | city | State of Victoria | Australia | -37.8166667 | 145.4166667 | 711 | 23762 |
| Silver Creek | city | State of Victoria | Australia | -36.3833333 | 146.7166667 | 1784 | 784 |
| Silverspur | city | State of Queensland | Australia | -28.8666667 | 151.2833333 | 1256 | 62 |
| Silverton | city | State of New South Wales | Australia | -31.8833333 | 141.2166667 | 925 | 0 |
| Simpsons Bay | city | State of Tasmania | Australia | -43.2666667 | 147.3166667 | 0 | 168 |
| Simsville | city | State of New South Wales | Australia | -32.4 | 152.0333333 | 649 | 1120 |
| Sinclair | city | State of Victoria | Australia | -38.0833333 | 141.55 | 291 | 224 |
| Sinclair Siding | city | State of Victoria | Australia | -38.0833333 | 141.6 | 242 | 224 |
| Singleton | city | State of New South Wales | Australia | -32.5666667 | 151.1833333 | 505 | 523 |
| Sisalana | city | State of Queensland | Australia | -23.6666667 | 150.6666667 | 206 | 117 |
| Sisters Beach | city | State of Tasmania | Australia | -40.915 | 145.5527778 | 3 | 1408 |
| Sisters Creek | city | State of Tasmania | Australia | -40.9833333 | 145.5833333 | 160 | 2054 |
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