Name
- O'Casey, Sean, dramatist and author1
- O'Neill, Eugene Gladstone, playwright1
- O'Riordan, Conal Holmes O'Connell, alias 'F Norreys Connell', novelist and playwright1
- Obermer, Seymour, alias `Austin Page', dramatist1
- Oliver, George, alias `Oliver Onions', novelist1
- Olivier, Edith, author1
- Osbourne, Lloyd, stepson of R L Stevenson1
- Partridge, Eric Honeywood, lexicographer, 1894-19791
- Paynter, Thomas Camborne, author1
- Peacey, Howard, playwright1
- Pemberton, Max, Knight, novelist, 1863-19501
- Peniakoff, Vladimir1
- Pertwee, Roland, dramatist and novelist1
- Philips, Bertha, playwright1
- Pinero, Arthur Wing, dramatist, 1855-19341
- Platt, Agnes, author and translator1
- Plunkett, Edward John Moreton Drax, 18th Baron Dunsany, writer, 1878-19571
- Pollard, Alfred Oliver, novelist1
- Pollock, Channing, dramatist1
- Pope-Hennessy, Una, DBE1