John Allan Rolls, 1st Baron Llangattock, DL (19 February 1837 – 24 September 1912) was a Victorian landowner, Conservative Party politician, socialite, local benefactor and agriculturalist. He lived at The Hendre, a Victorian country house north of Monmouth.
He was the only son of John Etherington Welch Rolls and his wife Elizabeth Mary Long. Elizabeth was a daughter of Walter Long of Preshaw and granddaughter of William Carnegie, 7th Earl of Northesk.
Rolls was educated at Eton College and Christ Church, Oxford, later becoming Captain in the Royal Gloucestershire Hussars Yeomanry Cavalry, and was afterwards appointed honorary colonel of the 1st Monmouthshire Artillery Volunteers, later 4th Welsh Brigade Royal Field Artillery
In 1868 he married Georgiana Marcia Maclean in London. She was the daughter of Sir Charles Fitzroy Maclean, 9th Baronet, of Morvaren (1798–1883). They lived at The Hendre and they also had a house South Lodge which was at Rutland Gate in London. They had four children
He was raised to the peerage in 1892.