| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| 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 |
| Σιβίστα | city | Sterea Ellada | Greece | 39.02 | 21.40 | 830 | 894 |
| Σιγερίτσα | city | Peloponnisos | Greece | 38.03 | 22.57 | 1669 | 3114 |
| Σιγηρίτσα | city | Peloponnisos | Greece | 38.03 | 22.57 | 1669 | 3114 |
| Σιγκουναίικα | city | Dytiki Ellada | Greece | 38.68 | 21.46 | 1049 | 18485 |
| Σιγούνι | city | Dytiki Ellada | Greece | 37.94 | 22.11 | 5029 | 1112 |
| Σιγούνιον | city | Dytiki Ellada | Greece | 37.94 | 22.11 | 5029 | 1112 |
| 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 |
| 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 |
| Σιλίμνα | city | Peloponnisos | Greece | 37.51 | 22.32 | 3349 | 14244 |
| 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 |
| 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 |
| Σιναράδες | city | Ionia Nisia | Greece | 39.57 | 19.85 | 830 | 15391 |
| Σινενιανά | city | Kriti | Greece | 35.42 | 23.64 | 1187 | 3130 |
| Σινιές | city | Ionia Nisia | Greece | 39.76 | 19.93 | 3 | 2772 |
| Σιούτιστα | city | Ipeiros | Greece | 39.75 | 20.57 | 2509 | 1421 |
| Σιούτσος | city | Ipeiros | Greece | 39.72 | 21.04 | 2650 | 1605 |
| Σιποτνίκια | city | Kentriki Makedonia | Greece | 40.50 | 23.44 | 1181 | 1964 |
| 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 |
| 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 |
| Σιωλάδες | city | Ipeiros | Greece | 39.75 | 21.08 | 2618 | 1611 |
| Σιόνι | city | Ipeiros | Greece | 39.39 | 21.02 | 1669 | 1603 |