Name
- Pelham, Thomas, Baron Pelham, 2nd Earl of Chichester1
- Pelham-Clinton, Thomas1
- Peltier, Jean Gabriel, French journalist1
- Penrose, Thomas, Chargé d'Affaires at Florence1
- Pery, Edmund Henry, 1st Earl of Limerick1
- Pfaff von Pfaffenhofen, Franz Simon von, Count1
- Phillimore, Joseph, Regius Professor of Civil Law at Oxford1
- Phipps, Henry, 1st Earl of Mulgrave1
- Pierrepont, Henry Manvers1
- Pitt, George, 2nd Baron Rivers1
- Pitt, William, Prime Minister, called 'the younger', 1759-18061
- Plener, Ignaz, Baron, Austrian, .Minister of Finance1
- Plunkett, William, Lieutenant-Colonel; Austrian army1
- Pläch de Seinsberg, Leopold, counsellor to Prince Schwarzenberg1
- Ponsonby, John William, 4th Earl of Bessborough, politician and statesman, 1781-18471
- Ponsonby, John, Viscount Ponsonby of Imokilly1
- Ponsonby, Maria, wife of John, 4th Earl of Bessborough1
- Poole, James, Inspector of Foreign Corps1
- Popham, Home Riggs, Admiral1
- Prichard, Pedro, of Cadiz1