| Radev, Stojan | Stojan Radev | Director | 2006 - 2008 | 1 | |
| Radestock, Peter | Peter Radestock | Director | 1992 | 3 | |
| Reisz, Karel | Karel Reisz | Director | 1993 | 1 | |
| Retzlaff, Arne | Arne Retzlaff | Director | 1995 - 2017 | 4 | |
| Richter, Sylvia | Sylvia Richter | Director | 1983 | 2 | |
| Rogoff, Gordon | Gordon Rogoff | Director | 1987 | 1 | |
| Ronen, Ilan, | Ilan Ronen | Director | 2000 | 1 | |
| Ross, David, | David Ross | Director | 1960 | 6 | |
| Rossacher, Hannes, | Hannes Rossacher | Director | 2003 - 2006 | 8 | |
| Rozen, Henryk | Henryk Rozen | Director | 1978 | 1 | |
| Rubasingham, Indhu, | Indhu Rubasingham | Director | 1996 | 1 | |
| Rucker, Mark | Mark Rucker | Director | 1995 | 1 | |
| Rudolph, Hanna | Hanna Rudolph | Director | 2007 | 1 | |
| Rufer, Adrian, | Adrian Rufer | Director | 1974 | 1 | |
| Russell, Barbara | Barbara Russell | Director | 1999 | 1 | |
| Rybicki, Witold | Witold Rybicki | Director | 1988 | 1 | |
| Rungwald, Helge, | Helge Rungwald | Director | 1957 | 2 | |
| Rochaix, Francois | Francois Rochaix | Director | 1983 - 1997 | 4 | |
| Robinson, Mary B., | Mary B. Robinson (Mary B. Robinson) | Director | 1993 | 1 | |
| Ramagli, Howard J. | Howard J. Ramagli | Director | 2005 | 1 | |
| Rosenzweig, Joshua D. | Joshua D. Rosenzweig | Director | 2000 | 1 | |
| Robinson, Lennox, | Lennox Robinson | Director | 1923 - 1928 | 4 | |
| Ribeiro, Francisco | Francisco Ribeiro | Director | 1947 | 1 | |
| Romer, Dennis | Dennis Romer | Director | 2011 | 1 | |
| Račkys, Sigita | Sigita Račkys | Director | 2007 | 1 | |
| Ran, Li | Li Ran | Director | 2010 | 1 | |
| Ringland, Prof. Byron | Prof. Byron Ringland | Director | 1981 | 1 | |
| Rasmussen, August, | August Rasmussen | Director | 1876 - 1878 | 4 | 1 |
| Rode-Ēbelings, Hermanis, | Hermanis Rode-Ēbelings | Director | 1889 | 1 | |
| Rosen, Julius, | Julius Rosen | Director | 1889 | 1 | |
| Ruederer, Josef, | Josef Ruederer | Director | 1898 | 1 | |
| Reucker, Alfred, | Alfred Reucker | Director | 1901 | 3 | |
| Rémond, Fritz, | Fritz Rémond | Director | 1911 | 1 | |
| Röbbeling, Hermann, | Hermann Röbbeling | Director | 1915 | 1 | |
| Rampelmann, Adolph, | Adolph Rampelmann | Director | 1920 | 1 | |
| Reich, Bernhard, | Bernhard Reich | Director | 1922 | 1 | |
| Rausse, Dr. Hubert, | Hubert Rausse (Dr. Hubert Rausse) | Director | 1928 | 1 | |
| Robert, Josef, | Josef Robert | Director | 1928 | 1 | |
| Rose, Paul, | Paul Rose | Director | 1933 | 3 | |
| Rott, Adolf, | Adolf Rott | Director | 1934 - 1966 | 4 | |
| Reichert, Franz, | Franz Reichert | Director | 1946 | 2 | |
| Raeck, Kurt, | Kurt Raeck | Director | 1949 | 1 | |
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