桑克森克索（西班牙语：Sanxenxo），是西班牙加利西亚自治区蓬特韦德拉省的一个市镇。 总面积45平方公里，总人口16.098人（2001年），人口密度358人/平方公里。

Sanxenxo (Galician pronunciation: [sanˈʃɛnʃo̝]) is a municipality in Galicia, Spain in the province of Pontevedra. It is situated in the southern part of the O Salnés region. It is bathed by the Atlantic Ocean in the estuaries of Pontevedra and Arousa, which lie in its western areas. The municipality has a population of 17,077 inhabitants (INE 2007).