Princes | Titles by Rank
- Princes of San Severo
- Princes of San Vito
- Princes of Sant Angelo dei Lombardi
- Princes of Sant' Agata
- Princes of Sant' Angelo
- Princes of Sant' Antimo
- Princes of Sant' Elia
- Princes of Sant'Angelo di San Paolo
- Princes of Santo Buono
- Princes of Santo Mauro
- Princes of Santo Stefano di Mistretta
- Princes of Santobuono
- Princes of Sanza
- Princes of Sardenha
- Princes of Savoya-Carignano
- Princes of Saxe
- Princes of Saxe-Altenburg
- Princes of Saxe-Barby
- Princes of Saxe-Coburg
- Princes of Saxe-Coburg-Gotha
- Princes of Saxe-Gessaph
- Princes of Saxe-Gessaphe
- Princes of Saxe-Gotha
- Princes of Saxe-Gotha
- Princes of Saxe-Gotha-Altenburg
- Princes of Saxe-Hildburghausen
- Princes of Saxe-Meiningen
- Princes of Saxe-Merseburg
- Princes of Saxe-Weimar
- Princes of Saxe-Weimar-Eisenach
- Princes of Saxe-Weissenfels
- Princes of Saxe-Zeitz
- Princes of Sayn-Wittgenstein
- Princes of Sayn-Wittgenstein-Berleburg
- Princes of Sayn-Wittgenstein-Hohenstein
- Princes of Sayn-Wittgenstein-Ludwigsburg
- Princes of Sayn-Wittgenstein-Sayn
- Princes of Scey Montbéliard
- Princes of Schaumburg-Lippe
- Princes of Schlesvig-Holstein-Sonderburg-Augustenburg
- Princes of Schlesvig-Holstein-Sonderburg-Beck
- Princes of Schlesvig-Holstein-Sonderburg-Glücksburg
- Princes of Schleswig-Holstein
- Princes of Schönaich-Carolath
- Princes of Schönburg-Hartenstein
- Princes of Schönburg-Waldenburg
- Princes of Schwarzburg
- Princes of Schwarzburg-Rudolstadt
- Princes of Schwarzburg-Sonderhausen
- Princes of Schwarzburg-Sonderhausen-Neustadt