Amasa-Villabona is a village located in the Gipuzkoa province of the Basque Country in Spain. Situated within the comarca of Tolosaldea, the settlement has a population exceeding 5,500 inhabitants and sits approximately 20 kilometers from the provincial capital of San Sebastián.
The municipality is situated in the Oria Valley, positioned near the foothills of Mount Gazume and Mount Uzturre. The geography of the area is characterized by its proximity to the Oria River. The village structure consists of two distinct areas: a rural area known as Amasa, which served as the original site of formation, and an urban area known as Villabona.