阿蒂恩萨（西班牙语：Atienza），是西班牙卡斯蒂利亚-拉曼恰瓜达拉哈拉省的一个市镇。总面积104平方公里，总人口474人（2001年），人口密度5人/平方公里。

Atienza is a municipality located in the province of Guadalajara, Spain. According to the 2006 census (INE), the municipality has a population of 437 inhabitants.

There were ancient Celtiberian settlements in the Cerro del Padrastro.