Sir Richard Wallace; 1st Baronet (21 June 1818 ??20 July 1890) was an English art collector. He was the illegitimate son of Richard Seymour-Conway; 4th Marquess of Hertford; for whom he worked as secretary; and inherited his father's unentailed estates; and extensive collection of European art in 1871 to which he added; after his death his widow donated the collection to the nation. The Wallace Collection in Hertford House.