摩莉甘（Mórrígan），是凯尔特神话中的战争、破坏、生育、司法与死亡的三位女神之一，并与马匹和大地紧密相关。摩莉甘一词意为“伟大的女王（Great Queen）”，她是艾尔玛斯的女儿，同时也是达格达的爱妃。她在万圣夜时与达格达圆房，并保证大地万物繁衍不息。她还曾经帮助达努之子在麦格图雷德战役中击败了丑陋的深海巨人。

有战争之处，必有其身影出现，并以魔力为战局常带来种种不可思议的影响。摩莉甘与另外两个姐妹马夏与妮潘共同组合为三位一体女神芭一波卡赫（Badhbh Cath），名称的意思为“化身为黑乌鸦的战争女神”。摩莉甘则是三位女神中的长者，也是组合中最为出名的一位战争女神。流传常将摩根勒菲与摩莉甘视作同一人物，甚至有些传说与文献还描述摩根勒菲的前世就是摩莉甘。

The Morrígan ("phantom queen") or Mórrígan ("great queen"), also known as Morrígu, is a figure from Irish mythology. The name is spelled Morríghan or Mór-ríoghain in Modern Irish.

The Morrígan is primarily associated with fate, especially with foretelling doom and death in battle. In this role she appears as a crow, flying above the battlefield. The Morrígan has thus been likened to the Valkyries and Norns of Germanic mythology. She is also associated with sovereignty, and her connection with cows may also suggest an association with wealth and the land.