皮朗阿尔卡杜（葡萄牙语：Pilão Arcado）是巴西巴伊亚州的一个市镇。总面积11700.012平方公里，总人口29812人，人口密度2.5人/平方公里。

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Pilão Arcado is a municipality in the state of Bahia in the North-East region of Brazil. Pilão Arcado covers 11,731.5 km (4,529.6 sq mi), and has a population of 35,255 with a population density of 3 inhabitants per square kilometer.

Pilão Arcado was originally inhabited by indigenous people of the Mocoase and Acoroase ethnic groups. The first Portuguese inhabitants came from the Guerreiro e Bernardo family, both of Portuguese nobility. A chapel named Santo Antônio do Pilão Arcado and a parish of the same name were established in 1771. The municipality fell into violence between 1842 and 1848. War was declared between the families of Militão Plácido de França Antunes and Captain Bernardo José Guerreiro. The conflict ended on August 1, 1848 with the death of the final adult son of the Guerreiro family. Fighting between the families occurred in both Pilão Arcado and nearby Sento Sé.