德阿（西班牙语：Deià），是西班牙巴利阿里群岛的一个市镇。总面积15平方公里，总人口654人（2001年），人口密度44人/平方公里。

Deià is a small coastal village in the Serra de Tramuntana, which forms the northern ridge of the Spanish island of Mallorca. It is located about 16 kilometres (10 mi) north of Valldemossa, and it is known for its literary and musical residents. Its idyllic landscape, orange and olive groves on steep cliffs overlooking the Mediterranean, served as a draw for German, English, and American expatriates after the First World War.