Lieutenant-Colonel Richard George Lumley, 9th Earl of Scarbrough (7 May 1813 – 5 December 1884) was an Anglo-Irish peer and soldier.
He was born at Tickhill Castle, the son and heir of Frederick Lumley-Saville (1788–1837), the only son of the fifth son of the fourth Earl of Scarbrough. His mother, Charlotte Mary (née de la Poer Beresford), was the daughter of Rev. George Beresford, grandson of Marcus Beresford, 1st Earl of Tyrone.
Educated at Eton College, he entered the army as a Cornet in the Hussars, and retired in 1837 as a Lieutenant-Colonel in the West Yorkshire Yeoman Cavalry. After retirement he entered politics as an elected representative peer and sat in the House of Lords until he inherited the family titles in October 1856.
Lumley's predecessor, John Lumley-Savile, 8th Earl of Scarbrough, died without legitimate children. Lumley inherited the earldom of Scarbrough and barony of Lumley although he was only the first cousin once removed from the eighth earl. He also inherited the Viscountcy of Waterford in the Peerage of Ireland.
Scarbrough added considerably to the family seat of Sandbeck Park in Yorkshire, which dated to the 17th century. In 1857, he hired William Burn to remodel and improve the house. In 1869, Benjamin Ferrey built a private chapel for the earl.
In 1878 the Earl engaged the architect James Whitton to design and layout a holiday resort on his estate at Skegness.