Eurymachus was an Ithacan nobleman, one of the leading suitors of Penelope in The Odyssey. He was killed by Odysseus upon his return.

"Eurymachus" also refers to one of the 180 Theban soldiers who were taken prisoner in the Theban siege of Plataea. All of the Theban soldiers were killed after the Plataeans brought everyone living outside of their walls into the city after unrequited negotion with Thebes's nightly backup troops. References: Thucydides, Peloponnesian War, Book 2