阿尔魏勒县（Landkreis Ahrweiler）是德国莱茵兰-普法尔茨州北部的一个县，首府巴特诺伊纳尔-阿尔魏勒。

阿尔魏勒县北面与北莱茵-威斯特法伦州的奥伊斯基兴县、莱茵-锡格县和波恩市，东面与新维德县，南面与迈恩-科布伦茨县，西南面与埃菲尔火山县相邻。

Ahrweiler (German:[ˈaːɐ̯ˌvaɪlɐ]) is a district in the north of Rhineland-Palatinate, Germany. It is bounded by (from the north and clockwise) the districts of Euskirchen, Rhein-Sieg and the city of Bonn in the state of North Rhine-Westphalia, and the districts of Neuwied, Mayen-Koblenz and Vulkaneifel.