Donald Sinclair may refer to: Donald Sinclair (hotel owner) (1909–1981), owner of the Gleneagles Hotel in Torquay and the inspiration for the character Basil Fawlty in Fawlty Towers Donald Sinclair (veterinary surgeon) (1911–1995), inspiration for the character Siegfried Farnon in James Herriot's novels and their film and TV adaptations All Creatures Great and Small Donald Sinclair (Ontario politician) (1829–1900), Canadian politician Donald Sinclair (diplomat), former Canadian ambassador to Israel Donald Sinclair (Minnesota politician) (1899-1978), American farmer and politician