Name
- War Office, 1857-19643
- Baghdad Railway, 1903-1
- Board of Trade, 1786-19701
- British Forces in Iraq, 1933-19411
- Commander of the Mesopotamia Expeditionary Force, 1914-19201
- Director of Railways, Mesopotamia, 1916-19321
- Foreign Office, 1782-19681
- Government of France, Third Republic, 1871-19401
- Government of India, Foreign and Political Department, 1783-19371
- Government of India, Public Works Department, Superintending Engineer, Mid 19th century-Mid 20th century1
- Government of the German Empire, 1871-19181
- Government of the Russian Empire, 1721-19171
- HM Ambassador to Iran, 1807-19801
- HM Ambassador to Russia, 1801-19221
- HM Ambassador to the Ottoman Empire, 1583-19141
- Imperial Government of the Ottoman Empire, 1908-19181
- Mesopotamian Transport Commission, 19181
- Persian Gulf Political Residency, 1822-19711
- Political Agent, Kuwait, 1904-19611
- Political Agent, Turkish Arabia, 1812-18921