Name
- A' Beckett, William, correspondent of J C Hobhouse, fl 1828-18291
- A'Court, William, 1st Baron Heytesbury, diplomat and politician, 1779-18603
- Abbott, Charles Stuart Aubrey, 3rd Baron Tenterden of Hendon1
- Abd al-Hasan, Mirza; Persian Ambassador to Great Britain1
- Abdul Hamid II, of Turkey2
- Abdül Halîm, Pasha; son of Mehemmed Ali, Pasha of Egypt1
- Abercrombie, Nigel James, of the Admiralty1
- Abercromby, James, 1st Baron Dunfermline, barrister and politician, 1776-18582
- Abraham, Charles John, Bishop of Wellington1
- Abro, Efendi; of the Turkish Foreign Ministry1
- Abro, Galoust1
- Abro, Khachatour1
- Achmet Hamid Bey, Reis-Effendi1
- Acton, John Francis Edward, 6th Baronet, Lieutenant-General, Prime Minister of Naples, 1736-18111
- Adair, Charles William, Captain RM1
- Adair, Robert, Knight, politician and diplomat, 1763-18552
- Adam, Frederick, Knight, General, 1781-185313
- Adam, William, Lord Chief Commissioner of the Jury Court of Scotland1
- Adderley, Charles Bowyer, 1st Baron Norton, 1814-19051
- Addington, Henry Unwin, civil servant, 1790-18704