阿拉卡茹（葡萄牙语：Aracaju）位于巴西东北大西洋沿岸，是塞尔希培州的首府，人口505,286（2006年）。

Aracaju (Portuguese pronunciation: [aɾakaˈʒu]) is the capital of the State of Sergipe, Brazil, located in the northeastern part of the country on the coast, about 350 km (217 mi) north of Salvador. According to the 2013 Census, the city has 614,577 inhabitants, which represents approximately 33% of the state population. Adding to the populations of the municipalities forming the Metropolitan area: Barra dos Coqueiros, Nossa Senhora do Socorro and São Cristóvão, the number goes to 899 239 inhabitants.