| Agios Kosmas | |
| Name Local: | Άγιος Κοσμάς |
| Type: | municipal unit |
| Periph: | West Macedonia |
| Periphunit: | Grevena |
| Pop Municunit: | 681 |
| Area Municunit: | 115.087 |
| Pop Community: | 54 |
| Area Community: | 9.496 |
| Population As Of: | 2021 |
| Elevation: | 962 |
| Coordinates: | 40.1517°N 36°W |
| Postal Code: | 511 00 |
| Area Code: | +30-2462 |
| Licence: | PN |
Agios Kosmas (Greek, Modern (1453-);: Άγιος Κοσμάς) is a village, a community and a municipal unit of the Grevena municipality. Before the 2011 local government reform it was an independent municipality.[1] The municipality was established in 1997 with the name Kosmas o Aitolos (Greek, Modern (1453-);: Κοσμάς ο Αιτωλός), which was changed to Agios Kosmas in 2004. The seat of the municipality was in Megaro.[2] The 2021 census recorded 54 residents in the community and 681 residents in the municipal unit. The community of Agios Kosmas covers an area of 9.496 km2 while the municipal unit covers an area of 115.087 km2.[3] The village is named after the 18th-century saint Cosmas the Aetolian.
The municipal unit of Agios Kosmas consists of nine communities: Agios Kosmas, Dasyllio, Kalirachi, Kalloni, Kydonies, Kyparissi, Megaro, Oropedio and Trikorfo.[1]
The community of Agios Kosmas consists of three settlements: Agios Kosmas, Ano Ekklisia and Ekklisia.