The Battle of Kilmurry was a skirmish fought between the Anglo-Irish Parliamentarians and a band of Irish Confederate guerrillas in County Clare, Ireland on 28 September 1642.
After escaping from Roundhead captivity at Lisnagaul on 26 September 1642, Seamus Hennessey immediately set about rebuilding his band of Catholic rapparees. After recruiting in Tipperary, he was ambushed by a Parliamentarian patrol that had wandered deep into Confederate territory roughly halfway between Ennis and Limerick. In the ensuing skirmish at Kilmurry, his green recruits were ridden down by Parliamentarian cavalry, and Hennessey was knocked unconscious early in the battle. His leaderless rabble collapsed, although they killed 6 of the Roundheads before they were overwhelmed and Hennessey was once again taken prisoner. After his escape from Kilmurry, he determined to build an army much larger than his first one and have his revenge against the Roundheads for his humiliations.