Agios Kosmas (Greek: Άγιος Κοσμάς, before 1927: Τσιράκι – Tsiraki)[2] is a village, a community and a municipal unit of the Grevena municipality.

Before the 2011 local government reform it was an independent municipality.

[5] 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.

[3] The community of Agios Kosmas consists of three settlements: Agios Kosmas, Ano Ekklisia and Ekklisia.