Viscounts | Titles by Rank
- Viscounts of Soussay
- Viscounts of Soutelo
- Viscounts of Souto
- Viscounts of Souto d' El-Rei
- Viscounts of Soveral
- Viscounts of Spoelberch
- Viscounts of St.Girons
- Viscounts of St.Jean
- Viscounts of Stern
- Viscounts of Suaçuna
- Viscounts of Subaé
- Viscounts of Subarita
- Viscounts of Sucena
- Viscounts of Taaffe
- Viscounts of Tabatinga
- Viscounts of Taíde
- Viscounts of Talhouët
- Viscounts of Tallard
- Viscounts of Tallart
- Viscounts of Tamandaré
- Viscounts of Tangil
- Viscounts of Tapia
- Viscounts of Tardinhade
- Viscounts of Tartas
- Viscounts of Taubaté
- Viscounts of Taunay
- Viscounts of Tavannes
- Viscounts of Taveiro
- Viscounts of Tavira
- Viscounts of Teixeira de Carvalho
- Viscounts of Teles de Menezes
- Viscounts of Telheiras
- Viscounts of Terra
- Viscounts of Thiers
- Viscounts of Thoisy
- Viscounts of Thouars
- Viscounts of Thury
- Viscounts of Tibagi
- Viscounts of Tinalhas
- Viscounts of Tocantins
- Viscounts of Tojal
- Viscounts of Tomillos
- Viscounts of Torrão
- Viscounts of Torre
- Viscounts of Torre Almiranta
- Viscounts of Torre Bela
- Viscounts of Torre da Murta
- Viscounts of Torre das Donas
- Viscounts of Torre de Moncorvo
- Viscounts of Torre do Terrenho