Earls, Counts | Titles by Rank
- Counts of Moriana del Rio
- Counts of Moriondo
- Counts of Mornay
- Counts of Morosini
- Counts of Morozzo
- Counts of Mörs
- Counts of Mörs-Saarwerden
- Counts of Mörsperg e Beffort
- Counts of Mortagne
- Counts of Mortain
- Counts of Mortemart
- Counts of Morville
- Counts of Morvilliers
- Counts of Morzin
- Counts of Moser
- Counts of Mossâmedes
- Counts of Mota Maia
- Counts of Motrico
- Counts of Moucheron
- Counts of Moucy-le-Vieil
- Counts of Moulins d'Amieu de Beaufort
- Counts of Moura
- Counts of Moustier
- Counts of Moy de Sons
- Counts of Moÿ de Sons
- Counts of Muenster
- Counts of Muge
- Counts of Muguiro
- Counts of Muhlengeetz
- Counts of Mühlingen
- Counts of Mulazzano con Faviano
- Counts of Müllenark
- Counts of Mun
- Counts of Münnich
- Counts of Münster
- Counts of Murça
- Counts of Murillo
- Counts of Muro
- Counts of Mussomeli
- Counts of Muy
- Counts of Nagold
- Counts of Nagy-Appony
- Counts of Najera
- Counts of Namur
- Counts of Nantes
- Counts of Nanteuil
- Counts of Napier de São Vicente
- Counts of Naso
- Counts of Nassau
- Counts of Nassau-Beilstein