Montagu Arthur Bertie, 7th Earl of Abingdon (13 May 1836 – 10 March 1928) was an English peer.
He was the fifth child of Montagu Bertie, 6th Earl of Abingdon and Elizabeth Lavinia Vernon-Harcourt. In 1911, he broke up and sold the family estates at Albury and Great Haseley.
On 10 July 1858 he married Caroline Theresa Towneley (d. 4 September 1873). They lived at Wytham Abbey in Berkshire (now Oxfordshire) had three children together:
On 16 October 1883 he married Gwendoline Mary Dormer, daughter of James Charlemagne Dormer. They had four children: