迈达斯（古希腊语：Μίδας，又译作“米达斯”、“弥达斯”），希腊神话中的弗里吉亚国王，故又称“迈达斯王”或“迈达斯国王”，以巨富着称；关于他点石成金的故事非常有名。

弥达斯是弗里吉亚国王戈耳狄俄斯和女神库柏勒的儿子（一说他是戈耳狄俄斯与库柏勒收养的孩子）。神话说，当弥达斯还是个婴儿的时候，蚂蚁向他嘴里搬运食物，这就预示了他将来必然成为巨富。荷马在伊利亚特中提到弥达斯的儿子叫利梯厄耳塞斯。利梯厄耳塞斯强迫所有路过他国家的人与他比赛收割谷子，凡落败者都被处死。后来大英雄赫剌克勒斯路过弗里吉亚，杀死了利梯厄耳塞斯。

Midas (/ˈmaɪdəs/; Greek: Μίδας) is the name of at least three members of the royal house of Phrygia.

The most famous King Midas is popularly remembered in Greek mythology for his ability to turn everything he touched into gold. This came to be called the golden touch, or the Midas touch. The Phrygian city Midaeum was presumably named after this Midas, and this is probably also the Midas that according to Pausanias founded Ancyra. According to Aristotle, legend held that Midas died of starvation as a result of his "vain prayer" for the gold touch. The legends told about this Midas and his father Gordias, credited with founding the Phrygian capital city Gordium and tying the Gordian Knot, indicate that they were believed to have lived sometime in the 2nd millennium BC, well before the Trojan War. However, Homer does not mention Midas or Gordias, while instead mentioning two other Phrygian kings, Mygdon and Otreus.