In Greek mythology, Iphimedon (Ancient Greek: Ἰφιμέδων, romanized: Iphimedōn, lit. 'ruling with might' or 'strong guardian') was a prince of Tiryns as son of King Eurystheus.
Iphimedon's mother was Antimache, daughter of Prince Amphidamas of Arcadia. He was the brother of Admete, Alexander, Eurybius, Mentor and Perimedes.
Iphimedon was killed in battle by the Athenians along with his brothers in the war that ensued when Athens refused to deliver the Heracleidae up to Eurystheus.