Theobald Taaffe, 1st Earl of Carlingford (c. 1603 – 31 December 1677), known as 2nd Viscount Taaffe, of Corren and 2nd Baron of Ballymote between 1642 and 1661, was an Irish Royalist officer who played a prominent part in the Wars of the Three Kingdoms. Following the outbreak of the Irish Rebellion of 1641, the Catholic Taaffe remained loyal to the authorities in Dublin. He later joined the Irish Confederates, and was awarded command of the Munster Army. Taaffe was a supporter of the moderate faction, and strongly supported an alliance between the Confederates and Irish Royalists. After the Cromwellian conquest of Ireland, Taaffe accompanied Charles II in exile. Following the Restoration, he was created 1st Earl of Carlingford.
Sir John Taaffe, 1st Viscount Taaffe of Corren, left fifteen children, of whom the eldest was Theobald. His mother was Anne Dillon, daughter of Theobald Dillon, 1st Viscount Dillon.
Theobald Taaffe was appointed to lead the Irish Munster army by Donagh MacCarthy, Viscount Muskerry in 1647. He was not an impressive commander, failing to prevent the sack of Cashel and then leading the Munster army to defeat at the battle of Knocknanauss in 1647. He had an antiquated sense of chivalry - before Knocknanuss he suggested to Baron Inchiquin, the enemy general, that the battle should be decided by 1000 hand picked men from each side. Inchiquin's reply was sarcastic: you have performed as much as I desire in bringing your army hither, I shall not desire you to lose any advantage you have in numbers of men, being your offer was only made for recreation.