| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sierndorf | city | Niederosterreich | Austria | 48.52 | 16.88 | 830 | 4071 |
| Sierndorf | city | Niederosterreich | Austria | 48.42 | 16.15 | 830 | 7087 |
| Sierndorf an der March | city | Niederosterreich | Austria | 48.52 | 16.88 | 830 | 4071 |
| Siernes Picats | city | Vaud | Switzerland | 46.51 | 7.17 | 4324 | 1897 |
| Siernicze Wielkie | city | Wielkopolskie | Poland | 52.41 | 18.03 | 377 | 3304 |
| Sierniki | city | Wielkopolskie | Poland | 52.74 | 17.08 | 252 | 5083 |
| Sierniki | city | Wielkopolskie | Poland | 52.20 | 16.73 | 236 | 5700 |
| Sierning | city | Oberosterreich | Austria | 48.03 | 14.30 | 1210 | 9705 |
| Sierning | city | Niederosterreich | Austria | 47.80 | 15.92 | 1952 | 4421 |
| Siernički | city | Brestskaya Oblast' | Belarus | 52.06 | 26.25 | 830 | 1788 |
| Siernovodske | city | Avtonomna Respublika Krym | Ukraine | 45.58 | 34.38 | 88 | 3838 |