Sinclair

Sinclair is a surname of Norman origin, derived from Saint-Clair, a toponymic name from the French region associated with Saint Clair. The spelling Sinclair is common in Scotland and North America, while Saint-Clair appears in some French- and Norman-influenced lineages. The name is notably associated with the Scottish Clan Sinclair, a family historically linked to Caithness and other parts of Scotland.

Notable people include Sir Clive Sinclair (1940–2021), a British entrepreneur who founded Sinclair Radionics and Sinclair Research, and helped popularize home computing with devices such as the ZX Spectrum and ZX80. Sinclair Lewis (1885–1951) was an American novelist and the first American to receive the Nobel Prize in Literature (1930); his works include Main Street and Babbitt. Harry Ford Sinclair (1876–1950s) was an American oilman who founded Sinclair Oil Corporation, known for the green Brontosaurus logo that appeared at service stations.

Sinclair Research Limited is the British electronics company established by Sir Clive Sinclair, renowned for early home computers and consumer electronics. Sinclair Oil Corporation is an American petroleum company with a long-standing brand marked by the dinosaur logo. Sinclair Broadcast Group is a United States media company that owns and operates television stations and produces local newscasts.