Name
- A'Court, William, 1st Baron Heytesbury, diplomat and politician, 1779-18602
- Acton, John Francis Edward, 6th Baronet, Lieutenant-General, Prime Minister of Naples, 1736-18111
- Adair, Robert, Knight, politician and diplomat, 1763-18552
- Addenbrooke, John Peter, equerry to Princess Charlotte, 1753-18211
- Addington, Henry, 1st Viscount Sidmouth, Prime Minister, 1757-18441
- Adolphus Frederick, Duke of Cambridge, son of George III, 1774-18501
- Albani, Carlo, Prince, formerly in service of Archduke Ferdinand of Austria2
- Alquier, Charles Jean Marie, Baron, French Ambassador to Sicily2
- Alvensleben, Baron, Prussian statesman1
- Anderson, William, Lieutenant; RN1
- Anstruther, Capt.? Robert1
- Antony Victor, Archduke of Austria1
- Arbuthnot, Charles, diplomat and politician, 1767-18501
- Arbuthnot, Marcia Mary Anne, 1st wife of C Arbuthnot, diplomatist1
- Arbuthnot, Robert, civil servant in Ceylon, 1760-18091
- Armfelt, Gustaf Mauritz, Baron, Swedish diplomatist1
- Army of Austria2
- Army of England3
- Arnstein and Eskeles, bankers, Vienna1
- Arnsteiner and Co, bankers, Vienna2