Mary Anne Abercromby, née Menzies, 1st Baroness Abercromby (born before 1752 – 11 February 1821) was a Scottish socialite and suo jure peeress. The daughter of John Menzies and Ann Campbell, she was created suo jure 1st Baroness Abercromby, of Aboukir and of Tullibody, in the County of Clackmannanshire, by Letters Patent on 28 May 1801. The barony was awarded in recognition of her late husband's gallantry at the Battle of Alexandria, at which he was mortally wounded. On her death in 1821 she was succeeded in the barony by her eldest son.
She married Captain Ralph Abercromby (later Lt.-Gen. Sir Ralph Abercromby), son of George Abercromby and Mary Dundas, on 17 November 1767, and had issue:
| Peerage of the United Kingdom | ||
|---|---|---|
| Preceded by New Creation |
Baroness Abercromby 1801–1821 |
Succeeded by George Abercromby |