Poșaga (German: Puschendorf; Hungarian: Podsága) is a commune located in Alba County, Transylvania, Romania. It has a population of 835 as of 2021, and is composed of seven villages: Corțești, Incești (Jencsest), Lunca (Aranyoslonka), Orăști (Orest), Poșaga de Jos (the commune center; Alsópodsága), Poșaga de Sus (Felsőpodsága) and Săgagea (Szegázs).

The commune is situated in the Apuseni Mountains, between the Trascău Mountains and Muntele Mare [ro], at the confluence of the Poșaga and Arieș rivers. It is located in the northern part of the county, on the border with Cluj County. The villages of Lunca and Poșaga de Jos are crossed by national road DN76 [ro]; Baia de Arieș is 23 km (14 mi) to the west and Turda is 40 km (25 mi) to the east. The Poșaga Gorge [ro] is a 10 ha (25 acres) protected area along the river Poșaga, between Poșaga de Jos and Poșaga de Sus.

Leon Șușman, the leader of an armed anti-communist resistance group from the 1950s, died in Poșaga de Sus in a shootout with Securitate troops in July 1957.

• Poșaga: the authentic Transylvanian village community on YouTube