| Koukaki | |
| Native Name: | Κουκάκι |
| Native Name Lang: | el |
| Settlement Type: | Neighborhood |
| Coordinates: | 37.9625°N 23.7208°W |
| Subdivision Type: | Country |
| Subdivision Name: | Greece |
| Subdivision Type1: | Region |
| Subdivision Name1: | Attica |
| Subdivision Type2: | City |
| Subdivision Name2: | Athens |
| Postal Code Type: | Postal code |
| Postal Code: | 117 41, 117 42 |
| Area Code: | 210 |
| Website: | www.cityofathens.gr |
Koukaki (el|Κουκάκι or Greek, Modern (1453-);: Κουκάκη, in Greek, Modern (1453-); pronounced as /kuˈkaci/) is a southeast neighbourhood of Athens, Greece.
The general area of Koukaki borders from the north with Makrygianni neighbourhood and the historical district of Plaka (the historical neighbourhood of Athens), the Municipality of Kallithea and Petralona neighbourhood from the south, Neos Kosmos neighbourhood from the east, and Filopappou and Thisio neighbourhoods from the west. The two largest streets that cross Koukaki are Veikou Street (north-to-south) and Dimitrakopoulou Street (south-to-north). On the borderline between Koukaki and Neos Kosmos stands Andrea Syngrou Avenue, an important avenue in Athens that connects its center with Poseidonos Avenue to the south.
It has a large weekly vegetable market every Friday.
Koukaki is served by two Athens Metro stations, Akropoli (near the Acropolis) and (on Andrea Syngrou Avenue). The nearest overground station is Petralona.
Koukaki is served by both lines (Syntagma-SEF and Syntagma-Kolimvitirio) of the Athens Tram (L. Vouliagmenis and Fix stops).
Koukaki is served by a large number of bus routes along Andrea Syngrou Avenue, including 040, 106, 126, 136, 137, 230, A2, B2. In terms of trolley bus, Routes 1, 5, and 15 have stops along Veikou and Dimitrakopoulou streets.