Earls, Counts | Titles by Rank
- Earls of Ormonde
- Earls of Ormonde (Ireland)-II
- Earls of Ormonde (Scotland)
- Earls of Orrery
- Earls of Ossory
- Earls of Oxford
- Earls of Oxford and Asquith
- Earls of Oxford-II
- Earls of Oxfordshire
- Earls of Pange
- Earls of Panmure
- Earls of Pembroke
- Earls of Pembroke
- Earls of Pembroke
- Earls of Pembroke
- Earls of Pembroke
- Earls of Perth
- Earls of Peterborough
- Earls of Piedade
- Earls of Plymouth-I
- Earls of Plymouth-II
- Earls of Plymouth-III
- Earls of Portarlington
- Earls of Portland
- Earls of Portmore
- Earls of Portsmouth
- Earls of Powis
- Earls of Queensberry
- Earls of Radnor
- Earls of Ranfurly
- Earls of Ravensworth
- Earls of Richmond
- Earls of Rochester
- Earls of Rochford
- Earls of Romney
- Earls of Roscommon
- Earls of Roseberry
- Earls of Rosebery
- Earls of Ross
- Earls of Rosse
- Earls of Rosslyn
- Earls of Rothes
- Earls of Royalton
- Earls of Ruglen
- Earls of Rutland
- Earls of Saint Aldwyn
- Earls of Saint Andrews
- Earls of Salis
- Earls of Salisbury
- Earls of Sandwich