| Ramsland, Clement | Clement Ramsland | Director | 1934 | 1 | |
| Richter, Raymund | Raymund Richter | Director | 1999 | 1 | |
| Rosen, Samuel | Samuel Rosen | Director | 1938 | 1 | |
| Ranucci-Beckman, Bets | Bets Ranucci-Beckman | Director | 1939 | 1 | |
| Roche, Dick | Dick Roche | Director | 1971 | 1 | |
| Richard, Peggy | Peggy Richard | Director | 1947 | 1 | |
| Rojas, Xavier | Xavier Rojas | Director | 2000 | 1 | |
| Rittenouer, Robert, G. | Robert G. Rittenouer | Director | 1948 | 1 | |
| Rockefeller, Kay | Kay Rockefeller | Director | 1949 | 1 | |
| Rubinstein, Hannele | Hannele Rubinstein | Director | 1994 | 1 | |
| Roenneke, Rolf | Rolf Roenneke (Rolf Roenneke) | Director | 1956 | 1 | |
| Russell, Kevin | Kevin Russell | Director | 2015 | 1 | |
| Risac, Claude | Claude Risac | Director | 1977 | 1 | |
| Ravid, Ofer | Ofer Ravid | Director | 2017 | 1 | |
| Rastgou, Sina | Sina Rastgou | Director | 2017 | 1 | |
| Roger, Christopher | Christopher Roger | Director | 2017 | 1 | |
| Rigg, Richard | Richard Rigg | Director | 1990 | 1 | |
| Román, Shenda | Shenda Román | Director | 1990 | 1 | |
| Rose, Richard | Richard Rose | Director | 2014 - 2015 | 2 | |
| Rauch, Hermann | Hermann Rauch | Director | 1911 | 1 | |
| Rippert, Matthias | Matthias Rippert | Director | 2018 | 1 | |
| Roush, Kelly | Kelly Roush | Director | 2017 | 1 | |
| Ray, Stacy | Stacy Ray | Director | 2018 | 1 | |
| Rupprecht, Lilja | Lilja Rupprecht | Director | 2018 | 1 | |
| Raschid, Neville | Neville Raschid | Director | 1984 | 1 | |
| Richardson, Brian | Brian Richardson | Director | 2019 | 1 | |
| Reese, Charles, M. | Charles M. Reese | Director | 2019 | 1 | |
| Rosenthal, Celine | Celine Rosenthal | Director | 2019 | 1 | |
| Richards, Kaleigh | Kaleigh Richards | Director | 2019 | 1 | |
| Ramchandaran, Shanker | Shanker Ramchandaran | Director | 2019 | 1 | |
| Roughan, Holly, Race | Holly Race Roughan | Director | 2019 | 2 | |
| Radoslav, Vesnić | Radoslav Vesnić | Director | 1925 | 1 | |
| Raof, Kamaran | Kamaran Raof | Director | 1990 | 1 | |
| Rashid, Bakr | Bakr Rashid | Director | 1995 | 1 | |
| Rogel, Angélica | Angélica Rogel | Director | 2019 | 1 | |
| Radun, V. | Vadim Iosifovič Radun | Director | 1978 | 1 | |
| Roslavlev, N. | N. Roslavlev | Director | 1951 | 1 | |
| Reznikov, Nikolai, Grigorjevič | Nikolai Grigorjevič Reznikov | Director | 1969 | 1 | |
| Ruiz H.V., María E. | María E. Ruiz H.V. | Director | 2004 | 2 | |
| Rajchelgauz, I. | I. Rajchelgauz | Director | 1989 | 1 | |
| Rietveld, Henriette | Henriette Rietveld | Director | 2020 | 1 | |
| Rice, Edmund | Edmund Rice | Director | 1950 | 1 | |
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