安多阿因（西班牙语：Andoain），是西班牙巴斯克自治区基普斯夸省的一个市镇。总面积27平方公里，总人口13814人（2001年），人口密度512人/平方公里。

Andoain is a town located in the province of Gipuzkoa, in the autonomous community of Basque Country, in the North of Spain. Nowadays it has a population above 13,000 inhabitants, which has been decreasing since 1981.

Andoain is located where the Oria River meets Leitzaran river, next to the mountains Belkoain and Buruntza.