Montagu Bertie, 6th Earl of Abingdon (19 June 1808 – 8 February 1884) was a British peer and politician.
Born at Dover Street, he was the eldest son of Montagu Bertie, 5th Earl of Abingdon and his first wife Emily Gage, fifth daughter of General Hon.
He was then elected MP for Abingdon in 1852 and on succeeding to his father's title and leaving the British House of Commons two years later, he became Lord Lieutenant of Berkshire.
They lived at Wytham Abbey in Berkshire (now Oxfordshire) and had nine children:[10] Lord Abingdon died in Mayfair, London in 1884 and was succeeded in his titles by his eldest son, Montagu.
He left part of his Oxfordshire estates (the manors of Thame, North Weston, Beckley and Horton-cum-Studley) to his second son Francis.