| Kamaterou Street | 10432 | Athens | Attica |
| Kampani Antoniou Street | 11252 | Athens | Attica |
| Kampouroglou Dimitriou Street | 11525 | Athens | Attica |
| Kampouroglou Ioanni Street | 11144 | Athens | Attica |
| Kampysi Gianni Street | 11141 | Athens | Attica |
| Kamvounion Street | 10444 | Athens | Attica |
| Kanari Konstantinou Square | 11361, 11364 | Athens | Attica |
| Kanari Konstantinou Street | 10671, 10673, 10674 | Athens | Attica |
| Kandanou Street | 11526 | Athens | Attica |
| Kanellopoulou Panagioti Avenue | 11527 | Athens | Attica |
| Kaningos Street | 10677, 10682 | Athens | Attica |
| Kantakouzinou Street | 10677 | Athens | Attica |
| Kantouni Nikolaou Street | 11524 | Athens | Attica |
| Kapaneos Street | 10444 | Athens | Attica |
| Kapetan Chrona Street | 11525 | Athens | Attica |
| Kapetan Lachana Street | 10445 | Athens | Attica |
| Kapetan Petroutsou Street | 11523 | Athens | Attica |
| Kapetan Rempelou Street | 11744 | Athens | Attica |
| Kapetan Varda Lamprou Street | 11744 | Athens | Attica |
| Kapidaki Sarantou Street | 10445 | Athens | Attica |
| Kaplanon Street | 10680 | Athens | Attica |
| Kapnikareas Square | 10563 | Athens | Attica |
| Kapnikareas Street | 10556, 10563 | Athens | Attica |
| Kapnokoptiriou Street | 10433 | Athens | Attica |
| Kapodistria Ioanni Street | 10432, 10677, 10682 | Athens | Attica |
| Kappadokias Street | 10444 | Athens | Attica |
| Kapsali Christou Street | 10674 | Athens | Attica |
| Kapsampeli Ioanni Street | 11524 | Athens | Attica |
| Karachristou Vlasiou Street | 11521 | Athens | Attica |
| Karagianni Lelas Square | 10443 | Athens | Attica |
| Karagianni Lelas Street | 11252, 11257, 11361 | Athens | Attica |
| Karagiorgi Servias Street | 10562, 10563 | Athens | Attica |
| Karaiskaki Georgiou Square | 10437 | Athens | Attica |
| Karaiskaki Georgiou Street | 10554 | Athens | Attica |
| Karamanlaki Alexandrou Street | 11253 | Athens | Attica |
| Karamanou Street | 10551 | Athens | Attica |
| Karamitsa Georgiou Street | 11255 | Athens | Attica |
| Karapanagiotou Apostolou Street | 11476 | Athens | Attica |
| Karasoutsa Ioanni Street | 11141 | Athens | Attica |
| Karatasou Tsami Street | 11741, 11742 | Athens | Attica |