Barons | Titles by Rank
- Barons of Soop af Limingo
- Barons of Sorbo
- Barons of Sorocaba
- Barons of Soubeyran
- Barons of Soubeyran-Reynaud
- Barons of Sourches
- Barons of Sousa
- Barons of Sousa
- Barons of Sousa Deiró
- Barons of Sousa Fontes
- Barons of Sousa Lages
- Barons of Sousa Leão
- Barons of Sousa Lima
- Barons of Sousa Mesquita
- Barons of Sousa Queirós
- Barons of Soutelinho
- Barons of Soutelo
- Barons of Souto do Rio
- Barons of Spandko
- Barons of Spaur e Flavon
- Barons of Spaur-Flavon
- Barons of Spedalotto
- Barons of Speidel
- Barons of Spencer
- Barons of Speth zu Unter-Marchtal
- Barons of Spies-Büllesheim
- Barons of Spinagallo
- Barons of Spino
- Barons of Splényi
- Barons of Splényi de Miháldi
- Barons of Spontin
- Barons of Springer
- Barons of Stackelberg
- Barons of Stael-Holstein
- Barons of Stafford
- Barons of Stain
- Barons of Stanwick
- Barons of Stedingk
- Barons of Steeb
- Barons of Stein
- Barons of Stein u. Guttenberg
- Barons of Stein-Liebenstein de Barchfeld
- Barons of Steinzu Nord und Ostheim
- Barons of Stengel
- Barons of Stenglin
- Barons of Stern
- Barons of Sternberg
- Barons of Sterneck zu Ehrenstein
- Barons of Stichsenstein
- Barons of Stillfried e Rattonitz