Archidamus may refer to: one of several kings of Sparta: Archidamus I (c. 600–575 BC) Archidamus II (469–427 BC) Archidamus III (360–338 BC) Archidamus IV (305–275 BC) Archidamus V (228–227 BC) Archidamus (speech), a speech of Isocrates written in the voice of Archidamus III Archidamus (physician), an ancient Greek doctor quoted by Galen who lived in the 4th or 5th century BCE Archedemus (disambiguation), a name commonly interchanged with Archidamus in the ancient world