Murrough MacDermod O'Brien, 1st Earl of Inchiquin and sixth Baron Inchiquin, (September 1614 – 9 September 1673), was an Irish nobleman and soldier, who came from one of the most powerful families in Munster. Known as "Murchadh na dTóiteán" ("Murrough the Burner") he studied war in the Spanish service. He accompanied the Earl of Strafford into Leinster on the outbreak of the Irish Rebellion of 1641 and was appointed governor of Munster in 1642. He had some small success, but was hampered by lack of funds and he was outwitted the Irish leader, Viscount Muskerry, at Cappoquin and Lismore. His forces dispersed at the truce of 1643.