Colonel Sir James Hayes Sadler, KCMG, CB (21 May 1827 – 9 January 1910) was a British diplomat and civil servant.
In 1854 Sadler was commissioned into the Artillery Battalion of the Royal Sussex Militia (later the Royal Sussex Artillery Militia and then the 3rd Brigade, Cinque Ports Division, Royal Artillery (Militia)). He was promoted Lieutenant the following year and Captain in 1858. He was promoted to Honorary Major in 1874, and full Major and Honorary Lieutenant-Colonel in 1879. He resigned his commission in 1882.
In 1893 and again in 1893-94, he was Chief political resident of the Persian Gulf (for Bahrain, Kuwait, Oman, Qatar, and the Trucial States). He subsequently held a number of senior governmental roles in East Africa and the West Indies.
Sadler died in 1910, and is buried in Brompton Cemetery, London.
His wife, Sophia Jane, Lady Sadler, died on 12 February 1902, and is buried next to him.
| Diplomatic posts | ||
|---|---|---|
| Preceded by Stuart Godfrey |
Chief political resident of the Persian Gulf 1893 |
Succeeded by James Crawford |
| Preceded by James Crawford |
Chief political resident of the Persian Gulf 1893–1894 |
Succeeded by Frederick Wilson |
| Preceded by William Ferris (Resident) |
Consul-General of British Somaliland (Resident 1897-8) 1898–1901 |
Succeeded by Eric Swayne |
| Government offices | ||
| Preceded by Sir Harry Johnston |
Commissioner of Uganda 1902–1906 |
Succeeded by Hesketh Bell |
| Preceded by Sir Donald Stewart |
Governor of the British East Africa Protectorate 1905–1909 |
Succeeded by Sir Percy Girouard |
| Preceded by Sir Ralph Champneys Williams |
Governor of the Windward Islands 1909–1910 |
Succeeded by Sir George Haddon-Smith |