M
- Count of Macedo
- Count of Machico
- Count of Macieira
- Count of Mafra
- Count of Magalhães
- Count of Mahem
- Count of Mangualde
- Count of Margaride
- Count of Marialva
- Count of Marim
- Count of Martens Ferrão
- Count of Massarelos
- Count of Matosinhos e São João da Foz
- Count of Melo
- Count of Mendia
- Count of Mértola
- Count of Mesquita
- Count of Mesquitela
- Count of Miranda do Corvo
- Count of Moita
- Count of Molelos
- Count of Monforte
- Count of Monsanto
- Count of Monsaraz
- Count of Monte Real
- Count of Moser
- Count of Moçâmedes
- Count of Moura
- Count of Muge
- Count of Murça
Read more about this topic: List Of Countships In Portugal