Name
- Oswell, William Cotton, game hunter1
- Ouseley, Gore, 1st Baronet, diplomat, 1770-1844, http://isni.org/isni/000000... http://viaf.org/viaf/447339621
- Oxholm, Waldemar Tully, General Danish diplomatist1
- Ozersky, Anicetos, Russian scientist1
- Paget, Henry William, 2nd Earl of Uxbridge, 1st Marquess of Anglesey1
- Pahlen, Nikolai Petrovich, Count1
- Palgrave, Francis, Knight, archivist and historian, 1788-18611
- Palgrave, William Gifford, diplomat and traveller, 1826-18881
- Palliser, John, geographer1
- Panizzi, Anthony, Knight, librarian at the British Museum, 1797-1879, http://isni.org/isni/000000...1
- Parish, Woodbine, diplomatist1
- Parke, James, Baron Wensleydale1
- Parker, Frances, née Talbot; second wife of John, 1st Earl of Morley, 1782-1857, http://viaf.org/viaf/1220595831
- Parsons, William, 3rd Earl of Rome, astronomer1
- Peacock, George, Dean of Ely1
- Pelham-Clinton, Henry Pelham, 5th Duke of Newcastle1
- Pentland, Joseph Barclay, traveller1
- Percy, Algernon, Baron Prudhoe, 4th Duke of Northumberland1
- Percy, John, metallurgist1
- Perugini, F.1