- Rauschenberg, Ch. (Christian), 1823 or 1824-1878, author1
- Rawson, C. H. (Charles H.), 1829-1884, author1
- Rawson, G. (Guillermo), 1821-18901
- Ray, Isaac, 1807-18813
- Ray, Isaac, 1807-1881, author5
- Raymond, Rossiter W. (Rossiter Worthington), 1840-1918, author1
- Reber, Charles T.1
- Reed, Henry, active 1875 author1
- Reed, Joseph A. (Joseph Alison), 1823-1884, author1
- Reform School of the District of Columbia.1
- Reis, Ascendino Angelo dos.1
- Reis, Henrique Ferreira Santos.2
- Reis, Joaquim Cardozo de Mello.1
- Reis, Joaquim Lopes dos.1
- Reis, João Gualberto Ferreira Santos.1
- Reiter, William C. (William Charles), 1817-18821
- Remsen, Ira, 1846-1927, author1
- Requião, Miguel Pinheiro.1
- Reuling, George, 1839-19151
- Reuling, George, 1839-1915, author3