| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siero | city | Cabo Delgado | Mozambique | -11.29 | 39.84 | 869 | 4172 |
| Siero | city | Asturias | Spain | 43.08 | -6.48 | 2509 | 1490 |
| Siero | city | Asturias | Spain | 43.39 | -5.66 | 830 | 24131 |
| Siero de la Reina | city | Castilla y Leon | Spain | 42.94 | -4.90 | 4228 | 201 |
| Sierokopass | city | Warminsko-Mazurskie | Poland | 53.38 | 20.36 | 830 | 4086 |
| Sieromco Mokanje | city | Southern | Sierra Leone | 7.90 | -12.19 | 830 | 10216 |
| Sieron | city | Catanduanes | Philippines | 13.80 | 124.41 | 0 | 3369 |
| Sieronice | city | Dolnoslaskie | Poland | 50.66 | 16.42 | 2086 | 7423 |
| Sieroniowice | city | Opolskie | Poland | 50.45 | 18.36 | 866 | 8766 |
| Sieroslaw | city | Zachodniopomorskie | Poland | 53.95 | 14.68 | 3 | 4562 |
| Sieroslaw | city | Kujawsko-Pomorskie | Poland | 53.55 | 18.29 | 341 | 3215 |
| Sieroslaw | city | Wielkopolskie | Poland | 52.40 | 16.68 | 242 | 9081 |
| Sieroslaw | city | Lodzkie | Poland | 51.51 | 19.63 | 830 | 4760 |
| Sieroslawek | city | Kujawsko-Pomorskie | Poland | 53.54 | 18.32 | 341 | 3067 |
| Sieroslawice | city | Swietokrzyskie | Poland | 51.20 | 20.36 | 921 | 14062 |
| Sieroszew | city | Dolnoslaskie | Poland | 51.53 | 15.95 | 830 | 4267 |
| Sieroszewice | city | Dolnoslaskie | Poland | 51.53 | 15.95 | 830 | 4267 |
| Sieroszewice | city | Wielkopolskie | Poland | 51.63 | 17.97 | 830 | 5708 |
| Sieroszewice Nowe | city | Wielkopolskie | Poland | 51.63 | 17.97 | 830 | 5708 |
| Sieroszow | city | Dolnoslaskie | Poland | 50.62 | 16.90 | 1000 | 9844 |
| Sieroszowice | city | Dolnoslaskie | Poland | 51.53 | 15.95 | 830 | 4267 |
| Sierosław | city | Zachodniopomorskie | Poland | 53.95 | 14.68 | 3 | 4562 |
| Sierosław | city | Kujawsko-Pomorskie | Poland | 53.55 | 18.29 | 341 | 3215 |
| Sierosław | city | Wielkopolskie | Poland | 52.40 | 16.68 | 242 | 9081 |
| Sierosław | city | Lodzkie | Poland | 51.51 | 19.63 | 830 | 4760 |
| Sierosławek | city | Kujawsko-Pomorskie | Poland | 53.54 | 18.32 | 341 | 3067 |
| Sierosławice | city | Swietokrzyskie | Poland | 51.20 | 20.36 | 921 | 14062 |
| Sieroty | city | Slaskie | Poland | 50.48 | 18.61 | 830 | 5762 |
| Sieroumba | city | Kindia | Guinea | 9.95 | -12.18 | 830 | 3074 |
| Sierove | city | Avtonomna Respublika Krym | Ukraine | 45.32 | 34.68 | 144 | 4609 |
| Sierow | city | Sverdlovskaya Oblast' | Russia | 59.60 | 60.58 | 308 | 13857 |