| Ren, Mingyang | Mingyang Ren | Director | 2015 - 2017 | 6 | |
| Richter, Josef | Josef Richter | Director | 1915 | 1 | |
| Rich, Roy | Roy Rich | Director | 1951 | 1 | |
| Rookes, Douglas | Douglas Rookes | Director | 1951 | 1 | |
| Radojević, Dino | Dino Radojević | Director | 1951 | 1 | |
| Rajon, Sébastien | Sébastien Rajon | Director | 2000 - 2004 | 13 | |
| Rehder, Karl | Karl Rehder | Director | 1922 | 1 | |
| Rosenberg, Peter, Andreas | Peter Andreas Rosenberg | Director | 1931 | 1 | |
| Rein, Peter | Peter Rein | Director | 1999 | 1 | |
| Roome, Phyllis | Phyllis Roome | Director | 1999 | 10 | |
| Raina, M. K. | M. K. Raina | Director | 1999 | 2 | |
| Rothstein, Peter | Peter Rothstein | Director | 1999 | 1 | |
| Ramsland, Clement | Clement Ramsland | Director | 1934 | 1 | |
| Richter, Raymund | Raymund Richter | Director | 1999 - 2000 | 1 | |
| Rosen, Samuel | Samuel Rosen | Director | 1938 | 1 | |
| Ranucci-Beckman, Bets | Bets Ranucci-Beckman | Director | 1939 | 1 | |
| Rogero, Laurent | Laurent Rogero | Director | 2017 | 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 | |
|
|
Contributors
