| Koumanoudi Stefanou Street | 11474 | Athens | Attica |
| Koumarianou Ioanni Street | 11473 | Athens | Attica |
| Koumoundourou Alexandrou Street | 10437 | Athens | Attica |
| Koumpari Kyriakou Street | 10674 | Athens | Attica |
| Koundourou Manousou Street | 11474 | Athens | Attica |
| Kountourioti Square | 11741 | Athens | Attica |
| Kountouriotou Street | 10682, 10683 | Athens | Attica |
| Koupa Gerasimou Street | 11526 | Athens | Attica |
| Kourma Street | 11522 | Athens | Attica |
| Kourmouli Michail Street | 11145 | Athens | Attica |
| Kourtidi Aristoteli Street | 10445, 11143, 11145 | Athens | Attica |
| Kousianofsky Alexandrou Street | 11525 | Athens | Attica |
| Koutoula Dimitriou Street | 11636 | Athens | Attica |
| Koutsia Dimitriou Street | 11363 | Athens | Attica |
| Koutsikari Emmanouil Street | 11522 | Athens | Attica |
| Koutsodimou Ioanni Street | 11636 | Athens | Attica |
| Koutsofta Michail Street | 11363 | Athens | Attica |
| Koutsonika Lamprou Street | 11744 | Athens | Attica |
| Kouzi Aristoteli Street | 11522 | Athens | Attica |
| Kozaki-Typaldou Georgiou Street | 10445 | Athens | Attica |
| Kozanis Street | 11855 | Athens | Attica |
| Kranaou Street | 10553 | Athens | Attica |
| Krassa Alkiviadi Street | 11255 | Athens | Attica |
| Kratinou Street | 10551, 10552 | Athens | Attica |
| Kratitos Street | 11744, 11745 | Athens | Attica |
| Kratylou Byway | 10442 | Athens | Attica |
| Kratylou Street | 10442 | Athens | Attica |
| Kremou Georgiou Street | 11143 | Athens | Attica |
| Kreontos Street | 10442, 10443 | Athens | Attica |
| Kreousis Street | 11854 | Athens | Attica |
| Kresnas Street | 11362, 11363 | Athens | Attica |
| Krestenon Street | 10446 | Athens | Attica |
| Kriari Konstantinou Street | 10445 | Athens | Attica |
| Kriezi Antoniou Street | 10553 | Athens | Attica |
| Kriezotou Nikolaou Street | 10671 | Athens | Attica |
| Krikou Andrea Street | 11525 | Athens | Attica |
| Krimaias Street | 11526 | Athens | Attica |
| Krinagorou Street | 11745 | Athens | Attica |
| Krinis Street | 11362 | Athens | Attica |
| Krisila Street | 11635 | Athens | Attica |