Sir Richard Wallace, 1st Baronet, of Sudbourne Hall in Suffolk, Hertford House in London, of Antrim Castle, County Antrim, Northern Ireland, of 2 Rue Laffitte, Paris, and of the Château de Bagatelle in Paris, was a British art collector and Francophile. Based on the Return of Owners of Land, 1873 he was the 24th richest man in the United Kingdom and the 73rd largest landowner, holding in total 72,307 acres, with a total annual value of £86,737. In addition he had valuable property in Paris and one of the greatest private art collections in the world, part of which, now known as the Wallace Collection, was donated to the UK Government by his widow, in accordance with his wishes.

The Wallace Collection is a museum in London occupying Hertford House in Manchester Square, the former townhouse of the Seymour family, Marquesses of Hertford. It is named after Sir Richard Wallace, who built the extensive collection, along with the Marquesses of Hertford, in the 18th and 19th centuries. The collection features fine and decorative arts from the 15th to the 19th centuries with important holdings of French 18th-century paintings, furniture, arms and armour, porcelain and Old Master paintings arranged into 25 galleries. It is open to the public and entry is free.