Henry Sinclair
Henry Sinclair may refer to:
- Henry I Sinclair, Earl of Orkney, Scottish-Norwegian nobleman
- Henry II Sinclair, Earl of Orkney, Scottish-Norwegian nobleman
- Henry Sinclair, 4th Lord Sinclair, Scottish nobleman
- Henry Sinclair , lord-president of the court of session and bishop of Ross
- Henry Sinclair, 6th Lord Sinclair, Scottish nobleman
- Henry Sinclair, 7th Lord Sinclair, Scottish nobleman
- Henry Daniel Sinclair, explorer and founder of Bowen, Queensland, Australia
- Henry Harbinson Sinclair, businessman of California
- Henry Sinclair, 2nd Baron Pentland, Scottish peer