UpAlphabetical listing of Places in Bougainville
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Salapem | city | Bougainville | Papua New Guinea | -4.47 | 154.22 | 0 | 237 |
| Sarime | city | Bougainville | Papua New Guinea | -5.78 | 154.75 | 164 | 2043 |
| Siaken | city | Bougainville | Papua New Guinea | -4.47 | 154.22 | 0 | 242 |
| Siar Number 1 | city | Bougainville | Papua New Guinea | -4.46 | 154.19 | 0 | 249 |
| Siar Number 2 | city | Bougainville | Papua New Guinea | -4.47 | 154.18 | 3 | 281 |
| Siara | city | Bougainville | Papua New Guinea | -5.49 | 154.80 | 0 | 1062 |
| Sibai | city | Bougainville | Papua New Guinea | -5.85 | 154.75 | 141 | 1404 |
| Sikorei | city | Bougainville | Papua New Guinea | -6.43 | 155.44 | 1000 | 2235 |
| Sinanai | city | Bougainville | Papua New Guinea | -6.60 | 155.41 | 830 | 2235 |
| Sininai | city | Bougainville | Papua New Guinea | -6.60 | 155.41 | 830 | 2235 |
| Siorovi | city | Bougainville | Papua New Guinea | -6.46 | 155.81 | 882 | 2045 |
| Sipuru | city | Bougainville | Papua New Guinea | -6.38 | 155.56 | 2834 | 2235 |
| Sirof | city | Bougainville | Papua New Guinea | -4.46 | 154.17 | 3 | 240 |
| Siroi | city | Bougainville | Papua New Guinea | -6.05 | 155.28 | 1187 | 2235 |
| Siruru | city | Bougainville | Papua New Guinea | -6.38 | 155.56 | 2834 | 2235 |
| Sohano | city | Bougainville | Papua New Guinea | -5.44 | 154.66 | 19 | 1109 |
| Suhin | city | Bougainville | Papua New Guinea | -5.23 | 154.71 | 0 | 1110 |
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