| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Κάτω Σέλιτσα | city | Peloponnisos | Greece | 37.00 | 22.17 | 1669 | 17366 |
| Κάτω Σέλλαι | city | Kriti | Greece | 35.34 | 25.72 | 3 | 1329 |
| Κάτω Σέλλες | city | Kriti | Greece | 35.34 | 25.72 | 3 | 1329 |
| Κάτω Σέτα | city | Sterea Ellada | Greece | 38.54 | 23.94 | 2083 | 1534 |
| Κάτω Σαγκρί | city | Notio Aigaio | Greece | 37.03 | 25.43 | 830 | 5404 |
| Κάτω Σαγκρίο | city | Notio Aigaio | Greece | 37.03 | 25.43 | 830 | 5404 |
| Κάτω Σακτούρια | city | Kriti | Greece | 35.12 | 24.61 | 2509 | 1603 |
| Κάτω Σαλμενίκο | city | Dytiki Ellada | Greece | 38.27 | 21.94 | 830 | 1985 |
| Κάτω Σαλμενίκον | city | Dytiki Ellada | Greece | 38.27 | 21.94 | 830 | 1985 |
| Κάτω Σαμικό | city | Dytiki Ellada | Greece | 37.54 | 21.60 | 91 | 6391 |
| Κάτω Σαμικόν | city | Dytiki Ellada | Greece | 37.54 | 21.60 | 91 | 6391 |
| Κάτω Σκαφιδωτή | city | Ipeiros | Greece | 39.26 | 20.64 | 1669 | 4234 |
| Κάτω Σουδενά | city | Ipeiros | Greece | 39.88 | 20.67 | 2805 | 536 |
| Κάτω Σούλι | city | Attiki | Greece | 38.16 | 24.02 | 32 | 5385 |
| Κάτω Σούλιον | city | Attiki | Greece | 38.16 | 24.02 | 32 | 5385 |
| Κάτω Σούνιο | city | Attiki | Greece | 37.67 | 24.04 | 3 | 9286 |
| Κάτω Σούνιον | city | Attiki | Greece | 37.67 | 24.04 | 3 | 9286 |
| Κάτω Σούρμενα | city | Kentriki Makedonia | Greece | 41.26 | 22.84 | 830 | 2034 |
| Κάτω Σπάθαρης | city | Peloponnisos | Greece | 37.75 | 21.88 | 830 | 1624 |
| Κάτω Σπήλαιο | city | Ionia Nisia | Greece | 39.47 | 19.94 | 830 | 7614 |
| Κάτω Σπήλαιον | city | Ionia Nisia | Greece | 39.47 | 19.94 | 830 | 7614 |
| Κάτω Σταλός | city | Kriti | Greece | 35.51 | 23.94 | 3 | 16108 |
| Κάτω Στενή | city | Sterea Ellada | Greece | 38.57 | 23.83 | 1669 | 149 |
| Κάτω Στραπόδι | city | Attiki | Greece | 36.17 | 22.99 | 416 | 896 |
| Κάτω Συνοικία | city | Peloponnisos | Greece | 38.00 | 22.48 | 1971 | 2080 |
| Κάτω Συνοικία Τρικάλων | city | Peloponnisos | Greece | 38.00 | 22.48 | 1971 | 2080 |
| Κάτω Συχαινά | city | Dytiki Ellada | Greece | 38.28 | 21.76 | 265 | 88722 |
| Κάτω Σχολάρι | city | Kentriki Makedonia | Greece | 40.43 | 23.03 | 830 | 8658 |
| Κάτω Σχολάριον | city | Kentriki Makedonia | Greece | 40.43 | 23.03 | 830 | 8658 |
| Κάτω Σύμη | city | Kriti | Greece | 35.05 | 25.49 | 2742 | 2745 |