In Greek mythology, the Myrmidons (or Myrmidones; Ancient Greek: Μυρμῐδόνες, romanized: Murmidónes, singular: Μυρμῐδών, Murmidṓn) were an ancient Thessalian tribe.
In Homer's Iliad, the Myrmidons are the soldiers commanded by Achilles. Their eponymous ancestor was Myrmidon, a king of Phthiotis, who was a son of Zeus and "wide-ruling" Eurymedousa, a princess of Phthiotis. In one account, Zeus seduced Eurymedousa in the form of an ant.