George Sinclair
George Sinclair may refer to:
- George Sinclair , Scottish footballer
- George Sinclair , Scottish mercenary who saw action in Sweden
- George Sinclair , Scottish mathematician
- Sir George Sinclair , 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 , 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