Sir Robert Abercromby, 5th Baronet

Sir Robert Abercromby, 5th Baronet of Birkenbog and Forglen, FRSE (4 February 1784 – 6 July 1855) was a Scottish politician.

He was the son of Sir George Abercromby, 4th Baronet, and Jane Ogilvie, the daughter of Alexander Ogilvie, 7th Lord Banff. He succeeded to the titles on the death of his father in 1831. Among the properties he inherited were the main family seat, which was Forglen House in Turriff, Aberdeenshire. He commissioned the Aberdeen City Architect, John Smith to design a new mansion in 1839.

From 1812 to 1818 he was the Member of Parliament for Banffshire. During the first quarter of the 19th century, Abercromby purchased most of the town and lands of Fermoy in Ireland from fellow Scotsman John Anderson. His grandson, Sir Robert John Abercromby, 7th Baronet is recorded as the owner of 434 acres of land in County Cork during the 1870s.

His town residence was at 18 Coates Crescent in Edinburgh's West End.

On 22 October 1816 he married Elizabeth Stephenson Douglas (1795-1863), only daughter of Samuel Douglas of Netherlaw, Kirkcudbrightshire. They had 15 children of which the first 7 were daughters. The eighth child, George Samuel Abercromby (22 May 1824-14 November 1872) became 6th baronet on his father's death.

In 1839, a daughter, Georgina Charlotte, died aged only 16 (she is buried in St Johns churchyard in Edinburgh).

In 1852, a daughter, Roberta Henrietta Abercromby, married Sir Edwin Hare Dashwood, 7th Baronet.

In 1862, a daughter, Frances Emily Abercromby, married William Forbes-Sempill, 17th Lord Sempill.