Viscounts | Titles by Rank
- Viscounts of Santarém
- Viscounts of Santiago da Guarda
- Viscounts of Santiago de Cacém
- Viscounts of Santiago de Caiola
- Viscounts of Santiago de Riba de Ul
- Viscounts of Santo Albino
- Viscounts of Santo Amaro
- Viscounts of Santo Amaro
- Viscounts of Santo Ambrósio
- Viscounts of Santo André
- Viscounts of Santo António
- Viscounts of Santo António de Lourido
- Viscounts of Santo António de Vessadas
- Viscounts of Santo António do Vale da Piedade
- Viscounts of Santo Elias
- Viscounts of Santo Tirso
- Viscounts of Santo Tomé
- Viscounts of Santo Varão
- Viscounts of São Bartolomeu
- Viscounts of São Bartolomeu de Messines
- Viscounts of São Bento
- Viscounts of São Bernardo
- Viscounts of São Boaventura
- Viscounts of São Caetano
- Viscounts of São Carlos
- Viscounts of São Clemente
- Viscounts of São Clemente de Basto
- Viscounts of São Cosme do Vale
- Viscounts of São Cristovão
- Viscounts of São Domingos
- Viscounts of São Fins
- Viscounts of São Francisco
- Viscounts of São Gabriel
- Viscounts of São Gião
- Viscounts of São Gil de Perre
- Viscounts of São Januário
- Viscounts of São Jerónimo
- Viscounts of São João
- Viscounts of São João da Barra
- Viscounts of São João da Madeira
- Viscounts of São João da Pesqueira
- Viscounts of São João Nepomuceno
- Viscounts of São Joaquim
- Viscounts of São Jorge
- Viscounts of São José do Norte
- Viscounts of São Justo
- Viscounts of São Laurindo
- Viscounts of São Lázaro
- Viscounts of São Leopoldo
- Viscounts of São Lourenço