Roderick Sinclair, 19th Earl of Caithness
| The Earl of Caithness | |
|---|---|
| Brigadier James Sinclair | |
| Born | 29 September 1906 | 
| Died | 8 May 1965 (aged 58) | 
| Allegiance | United Kingdom Ceylon | 
| Service | British Army Ceylon Army | 
| Years of service | ?–1955 | 
| Rank | Brigadier | 
| Service number | 36869 | 
| Unit | Gordon Highlanders | 
| Commands | 153rd Infantry Brigade Commander of Ceylon Army 51st Infantry Brigade | 
| Battles / wars | World War II | 
| Relations | Lord Berriedale (son) | 
Brigadier James Roderick Sinclair, 19th Earl of Caithness, CVO, CBE, DSO (29 September 1906 – 8 May 1965) was a British Army officer during World War II, hereditary peer and chief of Clan Sinclair.