Richard Oswald (1705 – 6 November 1784) was a Scottish merchant, slave trader, and advisor to the British government on trade regulations and the conduct of the American War of Independence. He is best known as the British peace commissioner who in 1782 negotiated the Peace of Paris.
Oswald was born to the Reverend George Oswald of Dunnet, and his wife Margaret Murray. At age 20 he was apprenticed to cousins who were merchants in Glasgow, the brothers Richard Oswald (1687–1763) of Scotstoun and Alexander Oswald (1694–1766), sons of the Rev. James Oswald (1654–1698). As a young man he worked for them as a factor, travelling in America and the Caribbean. In 1741 he became a partner in the Glasgow firm.
Doing good business during the War of the Austrian Succession, Oswald in 1746 established himself in mercantile business in London. He leased a counting-house at 17 Philpot Lane, where he initially devoted most of his time to the shipping and trading of tobacco. He took on a forage contract for the British Army, having in 1756 the merchant James Buchanan (1696–1758) as guarantor. He prospered also as a contractor during the Seven Years' War, particularly in the supply of bread in the German theatre, and was praised by Ferdinand of Brunswick.
Oswald bought the Cavens estate in Kirkcudbrightshire, and the Auchincruive estate in Ayrshire, in 1759. He made large additions of land to both estates, in the following decades. In British North America he had large land holdings and owned slaves in East Florida, and held estates in both Georgia and Virginia. He ran down these holdings during the American War of Independence. He also owned plantations in the Caribbean.