- Radecke, Albert Maria Robert
- Raff, Joseph Joachim
- Rameau, Jean-Philippe
- Rauzzini, Venanzio
- Ravel, Maurice
- Reber, Henri
- Reger, Max
- Reichardt, Johann Friedrich
- Reichardt, Luise
- Reimann, Aribert
- Reimann, Heinrich
- Reinecke, Karl Heinrich Carsten
- Reisenauer, Alfred
- Reissiger, Karl Gottlieb
- Reparaz, Antonio
- Respighi, Ottorino
- Ressler, Carl
- Reutter, Hermann
- Rheinberger, Joseph Gabriel
- Riedel, W.
- Ries, Ferdinand
- Righini, Vincenzo
- Rimsky-Korsakov, Nikolai
- Rivier, Jean
- Rodoreda, José
- Rodrigo, Joaquín
- Rodríguez de Hita, Antonio
- Rodríguez de Ledesma, Mariano
- Rodríguez de León, José
- Rodríguez, Gabriel
- Rogers, Clara Kathleen
- Rogers, James Hotchkiss
- Röhmeyer, Theodor
- Ronald, Sir Landon
- Rontani, Raffaello
- Röntgen, Julius
- Ropartz, Joseph Guy Marie
- Rorem, Ned
- Rosa, Salvator
- Rosales, Antonio
- Rosseter, Philip
- Rossini, Gioachino
- Rousseau, Jean-Jecques
- Roussel, Albert
- Rubinstein, Anton Grigoryevich
- Rücker, Manuel
- Rust, Friedrich Wilhelm
- Rutter, John (Milford)
