Name
- Otway, Arthur John, 3rd Baronet1
- Owen, Richard, KCB, naturalist1
- Palgrave, Francis Turner, poet and anthologist, 1824-18971
- Palma di Cesnola, Luigi, Conte archaeologist1
- Parkes, J1
- Parks, Patrick, sculptor1
- Parliament1
- Pauncefote, Julian, Baron Pauncefote1
- Paxton, Joseph, gardener and architect1
- Pelham-Clinton, Henry Pelham, 5th Duke of Newcastle1
- Phillimore, Robert Joseph, 1st Baronet, MP1
- Phillips, Claude, Keeper of the Wallace Collection1
- Phipps, Charles Beaumont, Colonel KCB, Keeper of the Queen's Purse1
- Pirelli, Lodovico Giusto, Director of the Accademia Filarmonica in Courgne1
- Pisani, Eveline, née Van Millingen widow of Count A Pisani1
- Poerio, Carlo1
- Ponsonby, Henry Frederick, Knight, army officer and private secretary to Queen Victoria, 1825-18951
- Ponsonby, John, Viscount Ponsonby of Imokilly1
- Port, Camille, of Val de Ponte, correspondent of Sir Austen Henry Layard, fl 18391
- Pourtales, Albert von, Count Prussian diplomatist1