Marquesses | Titles by Rank
- Marquesses of Torre Ocaña
- Marquesses of Torre Octavio
- Marquesses of Torre Soto de Briviesca
- Marquesses of Torre Tagle
- Marquesses of Torre Tagle
- Marquesses of Torre-Casa
- Marquesses of Torre-Manzanal
- Marquesses of Torre-Orgaz
- Marquesses of Torre-Pacheco
- Marquesses of Torreblanca
- Marquesses of Torrecuso
- Marquesses of Torrehermosa
- Marquesses of Torrenueva
- Marquesses of Torres
- Marquesses of Torres Novas
- Marquesses of Torres Novas-n
- Marquesses of Torres Vedras
- Marquesses of Torres-Cabrera
- Marquesses of Tortosa
- Marquesses of Toscana
- Marquesses of Tosos
- Marquesses of Touchet
- Marquesses of Tourzel
- Marquesses of Tous
- Marquesses of Tracy
- Marquesses of Trainel
- Marquesses of Trancoso
- Marquesses of Trans
- Marquesses of Transo
- Marquesses of Trazegnies
- Marquesses of Trélon
- Marquesses of Três Rios
- Marquesses of Trevico
- Marquesses of Tufillo
- Marquesses of Tullibardine
- Marquesses of Turim
- Marquesses of Tweeddale
- Marquesses of Ugena de la Lastra
- Marquesses of Unhão
- Marquesses of Ureña
- Marquesses of Urquijo
- Marquesses of Vadillo
- Marquesses of Vado
- Marquesses of Vado del Maestre
- Marquesses of Vaglio
- Marquesses of Vagos
- Marquesses of Val Oliola
- Marquesses of Vala
- Marquesses of Valada
- Marquesses of Valcarlos