Barons | Titles by Rank
- Barons of Ribeiro Barbosa
- Barons of Ribeiro de Almeida
- Barons of Ribeiro de Almeida-I
- Barons of Ribeiro de Sá
- Barons of Ribeiro Fundo
- Barons of Richthofen
- Barons of Riesenfels
- Barons of Rieux
- Barons of Rifaína
- Barons of Rigiulfo
- Barons of Rilvas
- Barons of Rimes
- Barons of Rindsmaul
- Barons of Ringhoffer
- Barons of Rio Apa
- Barons of Rio Ave
- Barons of Rio Bonito
- Barons of Rio Branco
- Barons of Rio Claro
- Barons of Rio Comprido
- Barons of Rio da Prata
- Barons of Rio das Contas
- Barons of Rio das Contas-I
- Barons of Rio das Flores
- Barons of Rio das Velhas
- Barons of Rio de Moinhos
- Barons of Rio do Ouro
- Barons of Rio do Ouro
- Barons of Rio Doce
- Barons of Rio Doce
- Barons of Rio Formoso
- Barons of Rio Fundo
- Barons of Rio Grande
- Barons of Rio Negro
- Barons of Rio Novo
- Barons of Rio Novo-I
- Barons of Rio Pardo
- Barons of Rio Pardo-I
- Barons of Rio Pardo-II
- Barons of Rio Pomba
- Barons of Rio Preto
- Barons of Rio Real
- Barons of Rio Seco
- Barons of Rio Tinto
- Barons of Rio Torto
- Barons of Río Tovia
- Barons of Rio Verde
- Barons of Rio Vermelho
- Barons of Rio Zêzere
- Barons of Ritter de Groenesteyn