George Sinclair
George Sinclair may refer to:
- George Sinclair (footballer), Scottish footballer
- George Sinclair (mercenary), Scottish mercenary who saw action in Sweden
- George Sinclair (mathematician), Scottish mathematician
- Sir George Sinclair (politician), British Member of Parliament for Dorking
- Sir George Sinclair, 2nd Baronet, British Member of Parliament for Caithness
- George Robertson Sinclair, cathedral organist and inspiration of one of Elgar's Enigma Variations
- George Sinclair (horticulturist), gardener to the Duke of Bedford
- George Sinclair, [4th Earl of Caithness], Scottish nobleman
- George Sinclair, [5th Earl of Caithness], Scottish nobleman
- George Sinclair, [6th Earl of Caithness], Scottish nobleman
- George Sinclair, 7th Earl of Caithness, Scottish nobleman
- George Sinclair, [15th Earl of Caithness], Scottish aristocrat
- George Sinclair, the name of several Earls of Caithness
- George [Brian Sinclair], British general
- George Sinclair, Lord Woodhall, Scottish judge