Thomas Taylour, 3rd Marquess of Headfort KP PC (I) (1 November 1822 – 22 July 1894) was an Irish peer, styled Lord Kenlis until 1829 and Earl of Bective from 1829 to 1870. He was High Sheriff of Meath in 1844, of Cavan in 1846, and of Westmorland in 1853. From 1852 to 1853, he was State Steward to the Lord Lieutenant of Ireland. In 1854, Bective succeeded his father-in-law as Member of Parliament for Westmorland, sitting as a Conservative.