| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Σιά | city | Lefkosia | Cyprus | 34.96 | 33.39 | 918 | 6312 |
| Σιάμο | city | Peloponnisos | Greece | 37.23 | 22.03 | 849 | 3363 |
| Σιάμον | city | Peloponnisos | Greece | 37.23 | 22.03 | 849 | 3363 |
| Σιάννα | city | Notio Aigaio | Greece | 36.15 | 27.78 | 830 | 522 |
| Σιάτιστα | city | Dytiki Makedonia | Greece | 40.26 | 21.55 | 2841 | 6383 |
| Σιάτλ | city | Washington | United States | 47.61 | -122.33 | 196 | |
| Σιένα | city | Toscana | Italy | 43.32 | 11.35 | 830 | 43359 |
| Σιαμέν | city | Fujian | China | 24.48 | 118.08 | 0 | 200671 |
| Σιαουλιάι | city | Siauliu Miestas | Lithuania | 55.93 | 23.32 | 351 | 88986 |
| Σιβίστα | city | Sterea Ellada | Greece | 39.02 | 21.40 | 830 | 894 |
| Σιβρίχισαρ | city | Aksaray | Turkey | 38.27 | 34.41 | 5869 | 3667 |
| Σιγγιδουνον | city | Serbia | 44.82 | 20.47 | 383 | 98803 | |
| Σιγερίτσα | city | Peloponnisos | Greece | 38.03 | 22.57 | 1669 | 3114 |
| Σιγηρίτσα | city | Peloponnisos | Greece | 38.03 | 22.57 | 1669 | 3114 |
| Σιγκαπούρη | city | Singapore | 1.29 | 103.86 | 3 | 940886 | |
| Σιγκουναίικα | city | Dytiki Ellada | Greece | 38.68 | 21.46 | 1049 | 18485 |
| Σιγκτούνα | city | Stockholm | Sweden | 59.62 | 17.72 | 3 | 6187 |
| Σιγούνι | city | Dytiki Ellada | Greece | 37.94 | 22.11 | 5029 | 1112 |
| Σιγούνιον | city | Dytiki Ellada | Greece | 37.94 | 22.11 | 5029 | 1112 |
| Σιδάδε Βέλια | city | Ribeira Grande de Santiago | Cape Verde | 14.92 | -23.62 | 19 | 11827 |
| Σιδάρι | city | Ionia Nisia | Greece | 39.79 | 19.71 | 3 | 7661 |
| Σιδάριον | city | Ionia Nisia | Greece | 39.79 | 19.71 | 3 | 7661 |
| Σιδεράς | city | Dytiki Makedonia | Greece | 40.38 | 21.69 | 2906 | 3558 |
| Σιδεραίοι | city | Ipeiros | Greece | 39.26 | 20.52 | 213 | 2708 |
| Σιδεριανά | city | Kriti | Greece | 35.32 | 23.75 | 2509 | 1376 |
| Σιδηροχώρι | city | Kentriki Makedonia | Greece | 41.24 | 23.02 | 219 | 4370 |
| Σιδηροχώρι | city | Anatoliki Makedonia kai Thraki | Greece | 40.84 | 24.14 | 1036 | 3606 |
| Σιδηροχώρι | city | Dytiki Makedonia | Greece | 40.59 | 21.27 | 2509 | 6518 |
| Σιδηροχώριον | city | Kentriki Makedonia | Greece | 41.24 | 23.02 | 219 | 4370 |
| Σιδηροχώριον | city | Anatoliki Makedonia kai Thraki | Greece | 40.84 | 24.14 | 1036 | 3606 |
| Σιδηροχώριον | city | Dytiki Makedonia | Greece | 40.59 | 21.27 | 2509 | 6518 |
| Σιδηρούντα | city | Voreio Aigaio | Greece | 38.44 | 25.96 | 830 | 918 |
| Σιδηρόκαστρο | city | Kentriki Makedonia | Greece | 41.24 | 23.39 | 830 | 7227 |
| Σιδηρόκαστρο | city | Peloponnisos | Greece | 37.34 | 21.77 | 1850 | 1313 |
| Σιδηρόκαστρο | city | Peloponnisos | Greece | 36.77 | 22.42 | 1988 | 1768 |
| Σιδηρόκαστρον | city | Kentriki Makedonia | Greece | 41.24 | 23.39 | 830 | 7227 |
| Σιδηρόκαστρον | city | Peloponnisos | Greece | 37.34 | 21.77 | 1850 | 1313 |
| Σιδηρόκαστρον | city | Peloponnisos | Greece | 36.77 | 22.42 | 1988 | 1768 |
| Σιδηρόνερο | city | Anatoliki Makedonia kai Thraki | Greece | 41.37 | 24.24 | 1925 | 947 |
| Σιδηρόνερον | city | Anatoliki Makedonia kai Thraki | Greece | 41.37 | 24.24 | 1925 | 947 |
| Σιδηρόπετρα | city | Anatoliki Makedonia kai Thraki | Greece | 41.25 | 24.61 | 859 | 37 |
| Σιδηρώ | city | Anatoliki Makedonia kai Thraki | Greece | 41.25 | 26.13 | 830 | 687 |
| Σιδωνία | city | Kriti | Greece | 34.99 | 25.50 | 0 | 1333 |
| Σιδώνα | city | Liban-Sud | Lebanon | 33.56 | 35.38 | 111 | 44154 |
| Σικάγο | city | Illinois | United States | 41.85 | -87.65 | 830 | |
| Σικασσό | city | Sikasso | Mali | 11.31 | -5.67 | 1669 | 101428 |
| Σικυών | city | Peloponnisos | Greece | 37.98 | 22.72 | 830 | 17961 |
| Σικυώνα | city | Peloponnisos | Greece | 37.98 | 22.72 | 830 | 17961 |
| Σικυώνας | city | Peloponnisos | Greece | 37.98 | 22.72 | 830 | 17961 |
| Σιλίκου | city | Lemesos | Cyprus | 34.83 | 32.89 | 2509 | 1484 |
| Σιλίμνα | city | Peloponnisos | Greece | 37.51 | 22.32 | 3349 | 14244 |
| Σιλίστρα | city | Silistra | Bulgaria | 44.12 | 27.27 | 22 | 36903 |
| Σιλίτσα | city | Sterea Ellada | Greece | 39.11 | 21.46 | 1683 | 1058 |
| Σιμίζα | city | Dytiki Ellada | Greece | 37.92 | 21.40 | 830 | 3012 |
| Σιμιάδες | city | Peloponnisos | Greece | 37.65 | 22.34 | 2093 | 1877 |
| Σιμισιακός | city | Kriti | Greece | 35.40 | 23.57 | 866 | 1282 |
| Σιμκέντ | city | Ongtustik Qazaqstan | Kazakhstan | 42.30 | 69.60 | 1748 | 141589 |
| Σιμπίου | city | Sibiu | Romania | 45.80 | 24.15 | 1669 | 96542 |
| Σιμωτάτα | city | Ionia Nisia | Greece | 38.12 | 20.64 | 830 | 1579 |
| Σιμόπουλο | city | Dytiki Ellada | Greece | 37.85 | 21.57 | 830 | 3300 |
| Σιμόπουλον | city | Dytiki Ellada | Greece | 37.85 | 21.57 | 830 | 3300 |
| Σιμών | city | Kentriki Makedonia | Greece | 41.20 | 23.25 | 98 | 7849 |
| Σιμώνας | city | Kentriki Makedonia | Greece | 41.20 | 23.25 | 98 | 7849 |
| Σινάορος | city | Lefkosia | Cyprus | 35.01 | 32.90 | 2595 | 3810 |
| Σιναράδες | city | Ionia Nisia | Greece | 39.57 | 19.85 | 830 | 15391 |
| Σινασός | city | Nevsehir | Turkey | 38.59 | 34.90 | 4189 | 23201 |
| Σινενιανά | city | Kriti | Greece | 35.42 | 23.64 | 1187 | 3130 |
| Σινιές | city | Ionia Nisia | Greece | 39.76 | 19.93 | 3 | 2772 |
| Σινούιτζου | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.10 | 124.40 | 3 | 275131 |
| Σινσινάτι | city | Ohio | United States | 39.16 | -84.46 | 830 | |
| Σιντί Μπουζίντ | city | Sidi Bouzid | Tunisia | 35.04 | 9.48 | 1072 | 89378 |
| Σινώπη | city | Sinop | Turkey | 42.03 | 35.16 | 183 | 13313 |
| Σιου Φολς | city | South Dakota | United States | 43.55 | -96.70 | 1669 | |
| Σιουέτς | city | Korce | Albania | 40.70 | 21.00 | 3349 | 5010 |
| Σιουδάδ Κεσάδα | city | Alajuela | Costa Rica | 10.32 | -84.43 | 2509 | 23894 |
| Σιουδάδ Χουάρες | city | Mexico | Mexico | 31.73 | -106.48 | 3753 | 175353 |
| Σιούτιστα | city | Ipeiros | Greece | 39.75 | 20.57 | 2509 | 1421 |
| Σιούτσος | city | Ipeiros | Greece | 39.72 | 21.04 | 2650 | 1605 |
| Σιπιάκ | city | Kvemo Kartli | Georgia | 41.61 | 44.19 | 5869 | 1710 |
| Σιποτνίκια | city | Kentriki Makedonia | Greece | 40.50 | 23.44 | 1181 | 1964 |
| Σιράζ | city | Fars | Iran | 29.61 | 52.53 | 5029 | 109947 |
| Σιράκο | city | Ipeiros | Greece | 39.59 | 21.11 | 4189 | 381 |
| Σιράκον | city | Ipeiros | Greece | 39.59 | 21.11 | 4189 | 381 |
| Σιρίλι | city | Kriti | Greece | 35.50 | 23.82 | 62 | 6414 |
| Σιρίλιον | city | Kriti | Greece | 35.50 | 23.82 | 62 | 6414 |
| Σιριπιδιανά | city | Kriti | Greece | 35.41 | 24.73 | 144 | 4838 |
| Σιρόκο | city | Anatoliki Makedonia kai Thraki | Greece | 41.18 | 24.89 | 1669 | 23042 |
| Σιρόκον | city | Anatoliki Makedonia kai Thraki | Greece | 41.18 | 24.89 | 1669 | 23042 |
| Σισάνι | city | Dytiki Makedonia | Greece | 40.44 | 21.50 | 4189 | 1255 |
| Σισάνιον | city | Dytiki Makedonia | Greece | 40.44 | 21.50 | 4189 | 1255 |
| Σιστέβο | city | Dytiki Makedonia | Greece | 40.59 | 21.27 | 2509 | 6518 |
| Σιστρούνι | city | Ipeiros | Greece | 39.41 | 20.70 | 1131 | 1350 |
| Σιστρούνιον | city | Ipeiros | Greece | 39.41 | 20.70 | 1131 | 1350 |
| Σιταγροί | city | Anatoliki Makedonia kai Thraki | Greece | 41.11 | 24.03 | 147 | 5431 |
| Σιταράλωνα | city | Dytiki Ellada | Greece | 38.51 | 21.66 | 830 | 2213 |
| Σιταράς | city | Dytiki Makedonia | Greece | 39.95 | 21.40 | 2509 | 920 |
| Σιταργιά | city | Dytiki Makedonia | Greece | 40.79 | 21.54 | 2057 | 2658 |
| Σιταριά | city | Anatoliki Makedonia kai Thraki | Greece | 41.45 | 26.40 | 206 | 5738 |
| Σιταριά | city | Kentriki Makedonia | Greece | 40.96 | 22.66 | 134 | 3723 |
| Σιταριά | city | Dytiki Makedonia | Greece | 40.79 | 21.54 | 2057 | 2658 |
| Σιταριά | city | Ipeiros | Greece | 39.87 | 20.53 | 1669 | 1909 |
| Σιτζιαζουάγκ | city | Hebei | China | 38.04 | 114.48 | 259 | 204824 |
| Σιτοχώρι | city | Anatoliki Makedonia kai Thraki | Greece | 41.46 | 26.36 | 232 | 2090 |
| Σιτοχώρι | city | Kentriki Makedonia | Greece | 40.88 | 23.62 | 262 | 1624 |
| Σιτοχώρι | city | Peloponnisos | Greece | 37.32 | 21.81 | 967 | 2865 |
| Σιτοχώριον | city | Anatoliki Makedonia kai Thraki | Greece | 41.46 | 26.36 | 232 | 2090 |
| Σιτοχώριον | city | Kentriki Makedonia | Greece | 40.88 | 23.62 | 262 | 1624 |
| Σιτοχώριον | city | Peloponnisos | Greece | 37.32 | 21.81 | 967 | 2865 |
| Σιτόμενα | city | Dytiki Ellada | Greece | 38.72 | 21.53 | 1866 | 1043 |
| Σιτόχωρο | city | Thessalia | Greece | 39.34 | 22.45 | 830 | 5897 |
| Σιτόχωρον | city | Thessalia | Greece | 39.34 | 22.45 | 830 | 5897 |
| Σιχαρί | city | Keryneia | Cyprus | 35.28 | 33.38 | 1669 | 9091 |
| Σιωλάδες | city | Ipeiros | Greece | 39.75 | 21.08 | 2618 | 1611 |
| Σιων | city | Israel-Jordan Neutral Zone | 31.77 | 35.23 | 1906 | 190244 | |
| Σιόνι | city | Ipeiros | Greece | 39.39 | 21.02 | 1669 | 1603 |