| Xenoudaki Georgiou Street | 11255 | Athens - Piraeus | Attica |
| Xerovouniou Street | 15344 | Athens - Piraeus | Attica |
| Xifia Nikiforou Street | 13342 | Athens - Piraeus | Attica |
| Xifiou Nikiforou Street | 11472 | Athens - Piraeus | Attica |
| Xirokrinis Street | 11142 | Athens - Piraeus | Attica |
| Xiromerou Street | 14562 | Athens - Piraeus | Attica |
| Xiromerou Street | 15351 | Athens - Piraeus | Attica |
| Xiromerou Street | 15236 | Athens - Piraeus | Attica |
| Xiromerou Street | 11363 | Athens - Piraeus | Attica |
| Xiromerou Street | 11526 | Athens - Piraeus | Attica |
| Xironomis Street | 12135 | Athens - Piraeus | Attica |
| Xirotopou Street | 13343 | Athens - Piraeus | Attica |
| Xirouchaki Nikolaou Street | 18233 | Athens - Piraeus | Attica |
| Xourafa Dimitriou Street | 17342 | Athens - Piraeus | Attica |
| Xouthou Street | 13344 | Athens - Piraeus | Attica |
| Xouthou Street | 10432 | Athens - Piraeus | Attica |
| Xouthou Street | 12131 | Athens - Piraeus | Attica |
| Xydia Nikolaou Street | 11743 | Athens - Piraeus | Attica |
| Xylangoura Street | 17342 | Athens - Piraeus | Attica |
| Xylokastrou Street | 13122 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 14123 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 13121 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 13451 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 13342 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 15773 | Athens - Piraeus | Attica |
| Xylouri Nikou Street | 16562 | Athens - Piraeus | Attica |
| Xylouri Nikou Street (Kourtiou Ernestou Street) | 11146, 11147 | Athens - Piraeus | Attica |
| Xylouri Nikou Street (Kourtiou Ernestou Street) | 11363, 11364 | Athens - Piraeus | Attica |
| Xynda Spyridona Street | 11141 | Athens - Piraeus | Attica |
| Xyniados Street | 11522 | Athens - Piraeus | Attica |
| Xypetis Street | 18541 | Athens - Piraeus | Attica |
| Xypetis Street | 16121 | Athens - Piraeus | Attica |
| Yakinthon Street | 15351 | Athens - Piraeus | Attica |
| Yakinthon Street | 15233 | Athens - Piraeus | Attica |
| Yakinthon Street | 15452 | Athens - Piraeus | Attica |
| Yakinthon Street | 17456 | Athens - Piraeus | Attica |
| Yakinthou Byway | 15343 | Athens - Piraeus | Attica |
| Yakinthou Street | 15344 | Athens - Piraeus | Attica |
| Yakinthou Street | 14578 | Athens - Piraeus | Attica |
| Yakinthou Street | 15343 | Athens - Piraeus | Attica |