Sanxenxo is a municipality in Galicia, Spain in the province of Pontevedra. It is situated in the southern part of the O Salnés region 15 kilometre…Sanxenxo is a municipality in Galicia, Spain in the province of Pontevedra. It is situated in the southern part of the O Salnés region 15 kilometres west of the city of Pontevedra and is bordered by the Atlantic Ocean, and the estuaries of Pontevedra and Arousa. The municipality has a population of 17,347 inhabitants.