阿科[1]（希伯來語：עַכּוֹ，羅馬化：ʻAkkō，英語：Acre），或阿卡（阿拉伯语：عكّا，羅馬化：ʻAkkā），是一座位于以色列北部加利利西部的城市，距离耶路撒冷约152公里。阿卡是持续有人类居住的最古老的城市之一。2011年人口为46,464人[2]，约75%为犹太人，25%为阿拉伯人。在1948年被以色列占领之前，大多数阿卡居民是阿拉伯人。
第一次十字軍東征建立耶路撒冷王國後，十字軍進攻阿卡，經過約4年圍困後，阿卡於1104年向十字軍投降。[3]阿卡成為十字軍在巴勒斯坦的主要港口。[4]到1130年代，阿卡人口約有25,000人，當時耶路撒冷王國境內只有耶路撒冷城的規模可與阿卡相比。
埃及的薩拉丁在1187年的哈丁战役擊敗十字軍後攻佔耶路撒冷，隨後未經戰鬥即佔領阿卡、西頓等地。第三次十字軍東征時，十字軍於1191年攻佔阿卡。隨着十字軍運動的衰落，地中海東岸的其它十字軍城鎮相繼失守，阿卡變成一座孤城，終於在1291年被馬穆鲁克王朝攻陷。
因阿卡及其周围有大量巴哈伊信仰的圣地，故2008年，阿卡与海法的巴哈伊信仰相关地点被列入世界遗产名录。[5][6]
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