卡茹埃鲁（葡萄牙语：Cajueiro）是巴西阿拉戈斯州的一个市镇。总面积124.8平方公里，总人口19169人，人口密度153.6人/平方公里。

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Cajueiro is a municipality located in the western of the Brazilian state of Alagoas. Its population is 19,212 (2005) and its area is 124 km². Its name comes from the Portuguese for the cashew tree — in the 19th century, a village began to form around such a tree, near the banks of the Paraíba river.