| Omonoia | |
| Native Name: | Ομόνοια |
| Native Name Lang: | el |
| Settlement Type: | Neighborhood |
| Coordinates: | 37.9839°N 23.7278°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: | 104 xx, 105 xx |
| Website: | www.cityofathens.gr |
Omonoia (in Greek, Modern (1453-); pronounced as /oˈmo.ni.a/) is a neighborhood in downtown Athens, Greece, centered on the square of the same name and served by the Omonoia station of the Athens Metro. Historically the heart of the city, it has experienced serious urban decay in recent years, becoming plagued by drug dealing, prostitution and theft, especially in its western part. Despite that, it is still a focal point for commercial and social life in Athens