Name
- Maubert de Gouvest, Jean Henri, pamphleteer1
- MeDermote, P., merchant1
- Medows, Evelyn Philip, Captain1
- Mitchell, Andrew, diplomat, 1708-17711
- Monin, Secretary to the Prince de Conti1
- Montrond, of Lausanne1
- Mordaunt, John, Lieutenant-General; KB1
- Mostyn, John, Major-General; General 17721
- Murray, William, Baron Mansfield, 1st Earl of Mansfield 1776; Lord Chief Justice of KB1
- Muyen, Frederik, wine-merchant of Amsterdam1
- Münchhausen, Philipp Adolf von, Baron Hanoverian Resident in England1
- Nay, Emmanuel, Comte de Richecourt, Minister of State in Tuscany1
- Neville, Richard Neville, born Aldworth; diplomatist and politician, 1717-17931
- O'Hara, James, 2nd Baron Tyrawley1
- Oglethorpe, James Edward, Lieutenant-General1
- Olivecrantz, Johan Paulin, Swedish diplomatist1
- Onslow, Richard, Lieutenant-General1
- Osborne, Edward, Viscount Latimer1
- Osborne, Thomas, 1st Duke of Leeds, 1632-17121
- Osorio Alarçon, Giuseppe, Sardinian Foreign Minister1