Viscounts | Titles by Rank
- Viscounts of Lobão
- Viscounts of Lobata
- Viscounts of Lombeek
- Viscounts of Lombeke
- Viscounts of Looz
- Viscounts of Lorena
- Viscounts of los Antrines
- Viscounts of los Castellones
- Viscounts of los Palacios de la Valduerna
- Viscounts of los Remedios
- Viscounts of los Villares
- Viscounts of Loureiro
- Viscounts of Loures
- Viscounts of Lourinhã
- Viscounts of Lousada
- Viscounts of Louvigny
- Viscounts of Luce de Chevigny
- Viscounts of Luppé
- Viscounts of Luzares
- Viscounts of Macaé
- Viscounts of Macaé-I
- Viscounts of Macedo de Cavaleiros
- Viscounts of Macedo Pinto
- Viscounts of Maceió
- Viscounts of Machaut
- Viscounts of Macieira
- Viscounts of Magé
- Viscounts of Magé
- Viscounts of Mahem
- Viscounts of Maiorca
- Viscounts of Mairos
- Viscounts of Malanza
- Viscounts of Mamblas
- Viscounts of Mangualde
- Viscounts of Manique do Intendente
- Viscounts of Manneville
- Viscounts of Maracajú
- Viscounts of Maranguape
- Viscounts of Marco
- Viscounts of Mareüil
- Viscounts of Margaride
- Viscounts of Mariares
- Viscounts of Maricá
- Viscounts of Marinha Grande
- Viscounts of Marinho
- Viscounts of Marmeleiro
- Viscounts of Marsac
- Viscounts of Marsan
- Viscounts of Marsay
- Viscounts of Marseille