Mappin & Webb is a company originally founded in Sheffield, England. The company is a noted firm of Silversmiths and formerly cutlery manufactures with roots back to 1774 when Joseph Mappin (snr) founded the firm. The company is now a retail jeweller, and Royal Warrant holder.

The firm was started by Joseph Mappin, in 1810, with a partner, Mr Arundel. They registered a trademark a "Sun" in 1812 and were trading from premises in Norfolk street and Mulberry street. His eldest son Frederick Thorpe Mappin (1821-1910) joined at the age of 13 as an apprentice. He then ran the business following his father's death in 1841. His brothers Edward, Joseph Charles and John Newton joined the firm later. The business grew, taking over William Sampson & Sons in 1845 and he also bought a London shop, to sell direct, and later, in 1856, a warehouse. He expanded trade with overseas trips, and setting up agencies in markets such as Canada and Australia. The firm was renamed as 'Mappin Bros.' in 1851. By 1851, he became the youngest ever Master Cutler. By 1852, he opened a new factory on Flat Street, next door to Rodgers' Norfolk street works (now the site of the old Head Post Office), but after a dispute, in 1859, with his younger brother, he left the firm, which later became part of Mappin and Webb.

Webb may refer to: