Princes | Titles by Rank
- Princes of Weikersheim
- Princes of Wenden
- Princes of Werle
- Princes of Werle-Rostock
- Princes of Wessex
- Princes of Wiazemsky
- Princes of Widin
- Princes of Wied
- Princes of Wied-Runkel
- Princes of Windisch-Graetz
- Princes of Windisch-Graetz-II
- Princes of Worotynska
- Princes of Wrede
- Princes of Wurtemberg
- Princes of Wurtemberg-Oels
- Princes of York
- Princes of Yvetot
- Princes Oginski
- Princes Orloff
- Princes Orlov
- Princes Orsini
- Princes Orsini di Gravina
- Princes Ouroussov
- Princes Paar
- Princes Palatine
- Princes Palatine in Sulzbach
- Princes Paley
- Princes Palffy
- Princes Pallavicini
- Princes Partanna
- Princes Pignatelli
- Princes Pignatelli di Terranova
- Princes Pio di Savoia
- Princes Polubinski
- Princes Poniatowski
- Princes Pozharsky
- Princes Pronski
- Princes Prozorovsky
- Princes Putiatine
- Princes Puzyna
- Princes Radziwill
- Princes Rakoczi de Felsövadasz
- Princes Repnin
- Princes Reuss
- Princes Reuss-Greiz
- Princes Reuss-Köstritz
- Princes Reuss-Schleiz
- Princes Romanov
- Princes Romanovsky
- Princes Romodanovsky