北艾尔郡（North Ayrshire），是英国苏格兰的32个一级行政区之一。地处苏格兰中部大西洋沿岸，辖区还包括克莱德河湾第一大岛阿然岛（Isle of Arran）。面积885km²，人口135,817。地区的行政中心在俄温（Irvine）。

North Ayrshire (Scottish Gaelic:Siorrachd Àir a Tuath, pronounced [ʃirˠəxk aːɾʲ ə t̪ʰuə]) is one of 32 council areas in Scotland. It has a population of roughly 136,000 people. It is located in the southwest of Scotland, and borders the areas of Inverclyde to the north, Renfrewshire to the northeast and East Ayrshire and South Ayrshire to the east and south respectively.