Name
- Foreign Office, 1782-19683
- Anglo-Iranian Oil Company Limited, 1909-19542
- Government of India, 1834-19472
- Government of Persia, Qājār dynasty, 1794-19252
- Amiranian Oil Company, 1930s-1940s1
- Arabian American Oil Company, 1933-19881
- British Legation, Tehran, c 1836-19441
- Clapp, Frederick Gardner, petroleum geologist and oil company director, 1879-19441
- Department of State, United States, 1789-1
- Eastern and General Syndicate Limited, oil company, 1920-19391
- Government of Iran, Pahlavi dynasty, 1925-19791
- Government of the Russian Empire, 1721-19171
- HM Ambassador to Iran, 1807-19801
- Hart, Charles Calmer, diplomat, 1879-19551
- Iraq Petroleum Company, 1912-1