In Greek mythology, Eurytus is the name of numerous characters.
He married Antiope, daughter of Pylo and had these children: Iphitus, Clytius, Toxeus, Deioneus, Molion, Didaeon, and a very beautiful daughter, Iole. A late legend also attributes Eurytus as the father of Dryope, by his first wife.
According to Homer, Eurytus became so proud of his archery skills that he challenged Apollo. The god killed Eurytus for his presumption, and Eurytus' bow was passed to Iphitus, who later gave the bow to his friend Odysseus. It was this bow that Odysseus used to killed the Suitors who had wanted to take his wife, Penelope.
A more familiar version Eurytus' death involves a feud with Heracles. Eurytus promised the hand of his daughter Iole to whoever who could defeat him and his sons in an archery contest. Heracles won the archery contest, but Eurytus reneged on his promise, fearing that Heracles would go mad and kill any children he had with Iole, just as he has slew the children he had with Megara.
Heracles left in anger, and soon after twelve of Eurytus' mares were stolen. Some have written that Heracles stole the mares himself, while others have said Autolycus stole the mares and sold them to Heracles.
In the search for the mares, Iphitus, who was convinced of Heracles' innocence, invited Heracles to help and stayed as Heracles' guest at Tiryns. Heracles invited Iphitus to the top of the palace walls and, in a fit of anger, threw Iphitus to his death. For this crime, Heracles was forced to serve the Lydian queen Omphale as a slave for either one or three years.
After Heracles had married Deianeira, he returned to Oechalia with an army. Revenge-driven, Heracles sacked the city and killed Eurytus and his sons, then took Iole as his concubine. The act eventually led to Heracles' own death, as Deianeira, fearing that Heracles loved Iole more, gave Heracles a robe smeared with the blood of the Centaur Nessus, believing it was a love-charm. The blood was actually a poison and the robe ate into Heracles' flesh.
Eurytus was the father of Clonus.
Eurytus or Eurýtos was the name of a Spartan warrior, one of the Three Hundred sent to face the Persians at the Battle of Thermopylae in 480 BC. Eurytus and a companion, Aristodemus were stricken with eye infections and ordered to return home. Eurytus turned back and ordered his helot attendant to lead him back to the battle. He entered the battle blind and was slain. Aristodemus returned to Sparta disgraced, but redeemed himself at the battle of Plataea the following year, by fighting to his death.