George Sinclair | |
|---|---|
| Earl of Caithness | |
 Earl of Caithness Coat of Arms | |
| Predecessor | George Sinclair, 4th Earl of Caithness |
| Successor | George Sinclair, 6th Earl of Caithness |
| Died | February 1643 |
| Noble family | Clan Sinclair |
| Father | John Sinclair, Master of Caithness |
| Mother | Jean Hepburn |
George Sinclair (died 1643) was a Scottish nobleman, the 5th Earl of Caithness and chief of the Clan Sinclair, a Scottish clan based in northern Scotland.