Earls, Counts | Titles by Rank
- Counts of Noer
- Counts of Nogarola
- Counts of Nola
- Counts of Nordgau
- Counts of Noreña de Asturias
- Counts of Normann-Ehrenfels
- Counts of Noroña
- Counts of Norvenich
- Counts of Nörvenich
- Counts of Nostitz-Rieneck
- Counts of Nouë
- Counts of Nova Friburgo
- Counts of Nova Goa
- Counts of Novahes
- Counts of Novelé
- Counts of Novellara
- Counts of Noyelles
- Counts of Noyon
- Counts of Nyle
- Counts of Obedos
- Counts of Ober-Salm
- Counts of Oberheingau
- Counts of Oberheingau e Wormsgau
- Counts of Oberlahngau
- Counts of Oberndorff
- Counts of Óbidos
- Counts of Odemira
- Counts of Oeiras
- Counts of Oelen
- Counts of Oettingen
- Counts of Oettingen-Baldern
- Counts of Oettingen-Baldern-Sötern
- Counts of Oettingen-Flochberg
- Counts of Oettingen-Katzenstein
- Counts of Oettingen-Oettingen
- Counts of Oettingen-Spielberg
- Counts of Oettingen-Wallerstein
- Counts of Oeynhausen
- Counts of Oeynhausen-Sierstorpff
- Counts of Ofalia
- Counts of Oilliamson
- Counts of Oldenburg
- Counts of Oldenburg-Berne
- Counts of Oldenburg-Delmenhorst
- Counts of Oldenburg-Oldenburg
- Counts of Oldenburg-Wildeshausen
- Counts of Olerdota
- Counts of Oliva
- Counts of Oliva de Gaytan
- Counts of Oliva de Plasencia