The Oaș Mountains (Romanian; Moldavian; Moldovan: Munții Oașului, Hungarian: Avas-hegység, Ukrainian: Гори Оаш) are a small volcanic mountain range within the Vihorlat-Gutin Area of the Inner Eastern Carpathians. The mountains are centered in northern section of the Țara Oașului, covering border area between the Satu Mare County in Romania, and the Zakarpattia Oblast in Ukraine. They are an extension of the Gutin Mountains.
The highest peak is Piatra Vâscului, reaching .
The Huta Pass (elevation) is a mountain pass in the Oaș Mountains that connects the counties of Maramureș and Satu Mare.
