琉科忒亚（希腊语：Λευκοθεα，“白色女神”）是希腊神话中一个宁芙。有关她的传说相当繁多，但比较一致的一点是，她是转变为宁芙的。

根据流传最广的传说，她原先是伊诺：卡德摩斯之女、塞墨勒的姊妹以及阿塔玛斯的妻子。她和丈夫接受赫耳墨斯的嘱托而抚养了狄俄倪索斯，因而遭到善妒的赫拉的报复，她调遣厄里倪厄斯将他们变成了疯子。疯癫的伊诺抱着孩子墨利克尔忒斯跳进了彼奥提亚（Beotia）的大海里。（根据不同的版本，她还烹煮了自己的孩子，等等。参见“伊诺”。）波塞冬将他们两个都变成了神祇：伊诺成为了琉科忒亚，而墨利克尔忒斯变成了帕莱蒙。

In Greek mythology, Leucothea (Greek:Leukothea (Λευκοθέα), "white goddess") was one of the aspects under which an ancient sea goddess was recognized, in this case as a transformed nymph.

In the more familiar variant, Ino, the daughter of Cadmus, sister of Semele, and queen of Athamas, became a goddess after Hera drove her insane as a punishment for caring for the newborn Dionysus. She leapt into the sea with her son Melicertes in her arms, and out of pity, the Hellenes asserted, the Olympian gods turned them both into sea-gods, transforming Melicertes into Palaemon, the patron of the Isthmian games, and Ino into Leucothea.