Felnac is a commune located in Arad County, Romania. Situated on the Vingăi Plateau along the left side of the Mureș Valley, the commune covers a total surface area of 5,120 hectares.
The administrative territory of Felnac currently consists of two villages: Călugăreni (Újvinga) and Felnac. The villages of Bodrogu Nou and Zădăreni were formerly part of the commune but were split off in 2004 to form the separate Zădăreni Commune.