| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Kleff | city | Nordrhein-Westfalen | Germany | 51.43 | 7.30 | 298 | 126968 |
| Klefhaus | city | Nordrhein-Westfalen | Germany | 50.89 | 7.27 | 830 | 37924 |
| Klefing | city | Niedersachsen | Germany | 52.38 | 7.28 | 141 | 4369 |
| Kleft | city | Niedersachsen | Germany | 52.22 | 8.33 | 351 | 49503 |