康尼岛（Coney Island，又译科尼岛）是位于美国纽约市布鲁克林区的半岛，原本为一座海岛，其面向大西洋的海滩是美国知名的休闲娱乐区域。居民大多集中位于半岛的西侧，约有六万人左右，范围西至希捷社区（Seagate），东至布莱登海滩（Brighton Beach）和曼哈顿海滩，而北至葛瑞福山德（Gravesend）社区。

二十世纪前叶在美国极为知名的太空星际乐园（Astroland）即是以科尼岛作为主要的腹地，该乐园在二次大战后开始衰退，并持续荒废了许久。在最近几年，科尼岛因为凯斯班公园（KeySpan Park）的开幕而重新繁荣起来，凯斯班公园是职棒小联盟球队布鲁克林旋风（Brooklyn Cyclones）的主要球场。旋风队在当地十分受到欢迎，每季开赛时都会吸引许多球迷到场观战。

Coney Island is a peninsular residential neighborhood, beach, and leisure/entertainment destination on the Atlantic Ocean in the southwestern part of the borough of Brooklyn, New York City. The site was formerly an outer barrier island, but became partially connected to the mainland by land fill. The residential portion of the peninsula is a community of 60,000 people in its western part, with Sea Gate to its west, Brighton Beach and Manhattan Beach to its east, the Atlantic Ocean to the south, and Gravesend to the north.