| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Σίβα | city | Kriti | Greece | 35.21 | 25.04 | 948 | 17004 |
| Σίβας | city | Kriti | Greece | 35.02 | 24.81 | 216 | 7107 |
| Σίβηρη | city | Kentriki Makedonia | Greece | 40.04 | 23.36 | 0 | 3267 |
| Σίγρι | city | Voreio Aigaio | Greece | 39.22 | 25.85 | 275 | 510 |
| Σίδερη | city | Ipeiros | Greece | 39.59 | 20.35 | 1253 | 3830 |
| Σίδνεϊ | city | New South Wales | Australia | -33.86 | 151.21 | 0 | 358927 |
| Σίδνεϋ | city | New South Wales | Australia | -33.86 | 151.21 | 0 | 358927 |
| Σίερατζ | city | Lodzkie | Poland | 51.60 | 18.73 | 830 | 41265 |
| Σίκινος | city | Notio Aigaio | Greece | 36.70 | 25.12 | 1177 | 197 |
| Σίκσα-ντονγκ | city | Gyeonggi | Korea, Republic of (South) | 37.68 | 126.81 | 137 | 265597 |
| Σίλαμος | city | Kriti | Greece | 35.27 | 25.15 | 830 | 89089 |
| Σίλατα | city | Nevsehir | Turkey | 38.45 | 34.68 | 5029 | 2717 |
| Σίλλη | city | Anatoliki Makedonia kai Thraki | Greece | 41.35 | 24.53 | 2509 | 149 |
| Σίμικλη | city | Gumushane | Turkey | 40.51 | 38.97 | 6709 | 1937 |
| Σίμος | city | Dytiki Ellada | Greece | 38.54 | 21.82 | 2664 | 873 |
| Σίμος Ιωαννίδης | city | Dytiki Makedonia | Greece | 40.78 | 21.36 | 2883 | 6146 |
| Σίμου | city | Pafos | Cyprus | 34.94 | 32.50 | 1669 | 2514 |
| Σίνα | city | Peloponnisos | Greece | 36.81 | 22.50 | 380 | 2283 |
| Σίνδος | city | Kentriki Makedonia | Greece | 40.67 | 22.81 | 9 | 20619 |
| Σίνεβρο | city | Dytiki Ellada | Greece | 38.07 | 22.34 | 2509 | 2182 |
| Σίνεβρον | city | Dytiki Ellada | Greece | 38.07 | 22.34 | 2509 | 2182 |
| Σίνουον-ντονγκ | city | Gyeonggi | Korea, Republic of (South) | 37.66 | 126.88 | 88 | 324653 |
| Σίνπιονγκ-ντονγκ | city | Gyeonggi | Korea, Republic of (South) | 37.63 | 126.79 | 36 | 248548 |
| Σίνσα-ντονγκ | city | Seoul | Korea, Republic of (South) | 37.60 | 126.91 | 98 | 1001999 |
| Σίντα | city | Ammochostos | Cyprus | 35.16 | 33.70 | 111 | 745 |
| Σίντρα | city | Lisboa | Portugal | 38.80 | -9.38 | 830 | 84235 |
| Σίντσον-ντονγκ | city | Gyeonggi | Korea, Republic of (South) | 37.73 | 126.66 | 26 | 43035 |
| Σίσαι | city | Kriti | Greece | 35.39 | 24.88 | 236 | 1134 |
| Σίσακ | city | Sisacko-Moslavacka Zupanija | Croatia | 45.47 | 16.38 | 380 | 12418 |
| Σίσαρχα | city | Kriti | Greece | 35.30 | 24.91 | 2053 | 3518 |
| Σίσες | city | Kriti | Greece | 35.39 | 24.88 | 236 | 1134 |
| Σίσι | city | Kriti | Greece | 35.31 | 25.52 | 13 | 3178 |
| Σίσιον | city | Kriti | Greece | 35.31 | 25.52 | 13 | 3178 |
| Σίσσες | city | Kriti | Greece | 35.39 | 24.88 | 236 | 1134 |
| Σίταινα | city | Peloponnisos | Greece | 37.29 | 22.65 | 1860 | 1167 |
| Σίτανος | city | Kriti | Greece | 35.12 | 26.16 | 1998 | 2087 |
| Σίτι του Λονδίνου | city | United Kingdom | 51.51 | -0.09 | 55 | 735279 | |
| Σίτσαινα | city | Ipeiros | Greece | 39.76 | 21.05 | 2723 | 1349 |
| Σίφνος | city | Notio Aigaio | Greece | 36.97 | 24.72 | 830 | 2263 |