Colonel Lord Arthur William Hill PC, DL, JP (28 July 1846 – 13 January 1931), was an Anglo-Irish soldier and Conservative politician.

He served three times as Comptroller of the Household between 1885 and 1898 in the Conservative administrations headed by Lord Salisbury.

Hill was a younger son of Arthur Hill, 4th Marquess of Downshire, by his wife the Honourable Caroline Frances Stapleton-Cotton, daughter of Field Marshal Stapleton Stapleton-Cotton, 1st Viscount Combermere.

They had one son, Arthur Hill, who succeeded his father as MP for West Down in 1898.

Lady Arthur Hill died in January 1874, shortly after the birth of her only child.