Barons | Titles by Rank
- Barons of Peratalada
- Barons of Pereira Bastos
- Barons of Pereira da Mota
- Barons of Pereira de Barros
- Barons of Pereira Franco
- Barons of Pereira Gonçalves
- Barons of Pereira Marinho
- Barons of Pereira-Arnstein
- Barons of Peres da Silva
- Barons of Perfall
- Barons of Perném
- Barons of Pernes
- Barons of Pernstein
- Barons of Perquel
- Barons of Peschici
- Barons of Pestels
- Barons of Petrolina
- Barons of Petrópolis
- Barons of Peyre
- Barons of Pfeffel
- Barons of Pfetten-Arnbach
- Barons of Piabanha
- Barons of Piaçabuçu
- Barons of Picard
- Barons of Pico do Celeiro
- Barons of Picoas
- Barons of Pierre-Buffière
- Barons of Pierrebuffière
- Barons of Pierrefort
- Barons of Pilar
- Barons of Pindamonhangaba
- Barons of Pindamonhangaba-I
- Barons of Pindaré
- Barons of Pinhal
- Barons of Pinho Borges
- Barons of Pinopar
- Barons of Pinós
- Barons of Pinto Lima
- Barons of Piracicaba
- Barons of Piracicamirim
- Barons of Piracinunga
- Barons of Piraí
- Barons of Piraí
- Barons of Pirajá
- Barons of Pirangi
- Barons of Pirapama
- Barons of Pirapetingui
- Barons of Pirapitinga
- Barons of Piraquara
- Barons of Piraquara-I