Barons | Titles by Rank
- Barons of Piratinim
- Barons of Piratininga
- Barons of Pirmont
- Barons of Pitangui
- Barons of Pitner
- Barons of Pitteurs von Budingen
- Barons of Piuí
- Barons of Planchard de Cussac
- Barons of Platen
- Barons of Pless
- Barons of Plessen
- Barons of Plettenberg
- Barons of Plettenberg-Lenhausen
- Barons of Plotho
- Barons of Poche-Lettmayer
- Barons of Poconé
- Barons of Pögl
- Barons of Pojuca
- Barons of Polheim
- Barons of Pomarão
- Barons of Pomarinho
- Barons of Pombalinho
- Barons of Pombeiro de Riba Vizela
- Barons of Pont
- Barons of Pont-L'Abbé
- Barons of Pontac
- Barons of Pontal
- Barons of Pontal-I
- Barons of Ponte Alta
- Barons of Ponte da Barca
- Barons of Ponte da Quarteira
- Barons of Ponte de Marxil
- Barons of Ponte de Santa Maria
- Barons of Ponte Nova
- Barons of Ponte Ribeiro
- Barons of Portela
- Barons of Porto Alegre
- Barons of Porto Covo da Bandeira
- Barons of Porto de Mós
- Barons of Porto Feliz
- Barons of Porto Novo
- Barons of Porto Seguro
- Barons of Postelwitz
- Barons of Potengi
- Barons of Potesta
- Barons of Pottendorf
- Barons of Pouilly
- Barons of Pouso Alegre
- Barons of Pouso Alto
- Barons of Pouso Frio