海枣（学名：Phoenix dactylifera），又名椰枣、波斯枣、伊拉克蜜枣、无漏子、番枣、海棕、仙枣等，为棕榈科刺葵属的植物。椰枣树具有耐旱、耐碱、耐热而又喜欢潮湿的特点。树龄可达百年。

果实产量高，是中东一些国家的重要出口农作物。椰枣树在阿拉伯神话中具有重要地位，沙特国徽的上方就是椰枣树。作为一种外来植物也十分受希腊人的喜爱，常常用其枝叶形状装饰在神殿的四周，另外椰枣的营养价值高，亦被称为沙漠面包，伊拉克人则称椰枣为绿色金子。

Phoenix dactylifera (date or date palm) is a flowering plant species in the palm family Arecaceae, cultivated for its edible sweet fruit. Although its place of origin is unknown because of long cultivation, it probably originated from lands around Iraq. The species is widely cultivated and is naturalized in many tropical and subtropical regions worldwide.