阿尔甘萨（西班牙语：Arganza），是西班牙卡斯蒂利亚-莱昂莱昂省的一个市镇。总面积40平方公里，总人口899人（2001年），人口密度22人/平方公里。

Arganza (Spanish pronunciation: [arˈɣanθa]) is a village and municipality located in the region of El Bierzo (province of León, Castile and León, Spain) . According to the 2010 census (INE), the municipality has a population of 944 inhabitants while the village has 245.