Oas is a municipality located in the province of Albay in the Bicol Region of the Philippines. It serves as a local government unit within the archipelago, characterized by its geographical position in the southeastern portion of the province.
The area is primarily defined by its rural landscape and its role as a residential and agricultural hub for the local population. As part of Albay, it is situated in a region known for its diverse topography and proximity to significant natural landmarks.