贝尔塞奥（西班牙语：Berceo），是西班牙拉里奥哈自治区的一个市镇。总面积15平方公里，总人口211人（2001年），人口密度14人/平方公里。

Berceo (in the Middle Ages, Madriz) is a municipality in La Rioja, Spain. It is located near the monastery of San Millán de la Cogolla and was the birthplace of Gonzalo de Berceo. It has also been proposed as identification of historic Vergegio, named by Braulio of Zaragoza as the birthplace of Saint Millán, although present Berdejo in Aragon is another candidate.