| Schäfer, Pierre | Pierre Schäfer | Director | 2015 | 1 | |
| Schroeder, Nicholas | Nicholas Schroeder | Director | 2012 | 1 | 1 |
| Simons, J.R. | J.R. Simons | Director | 2012 | 1 | |
| Seute, Kathrin | Kathrin Seute | Director | 2011 | 1 | |
| Samandarian, Hamid | Hamid Samandarian | Director | 1961 - 1964 | 2 | 1 |
| Solé, José | José Solé | Director | 1964 | 1 | |
| Sansom, Laurie | Laurie Sansom | Director | 2012 | 1 | 1 |
| Schmidt, Emile, O. | Emile O. Schmidt | Director | 1963 | 1 | |
| Settle, Joanna | Joanna Settle | Director | 2016 | 1 | |
| Schutz, Stanley | Stanley Schutz | Director | 1963 | 1 | 1 |
| Segal, Alex | Alex Segal | Director | 1953 - 1962 | 2 | 1 |
| Sheybal, Vladek | Vladek Sheybal | Director | 1961 | 1 | |
| Seibert, Chris | Chris Seibert | Director | 2011 | 12 | |
| Sullivan, Roger | Roger Sullivan | Director | 1961 | 1 | |
| Solntseva, Rimma | Rimma Solntseva | Director | 2012 | 1 | |
| Stoker, Willard | Willard Stoker | Director | 1948 - 1960 | 2 | |
| Shepherd-Bates, Frannie | Frannie Shepherd-Bates | Director | 2011 | 1 | 1 |
| Solberg, Charlotte, Okabe | Charlotte Okabe Solberg | Director | 2012 | 1 | |
| Skorpen, Ingrid | Ingrid Skorpen | Director | 2012 | 1 | |
| Staniewski, Wlodzimierz | Wlodzimierz Staniewski | Director | 2012 | 1 | 1 |
| Stolte, Richard | Richard Stolte | Director | 1896 | 1 | |
| Sutton, Larry | Larry Sutton | Director | 2011 | 1 | |
| Soare, Soare Z. | Soare Z. Soare | Director | 1924 - 1944 | 4 | |
| Spinti, August | August Spinti | Director | 1918 | 1 | |
| Stevens, Janis | Janis Stevens | Director | 2013 | 1 | |
| Schönberg, Klaus | Klaus Schönberg | Director | 1959 | 1 | |
| Svendsen, Torben, Anton | Torben Anton Svendsen | Director | 1956 - 2003 | 4 | 1 |
| Siebert, Friedrich | Friedrich Siebert | Director | 1959 | 1 | |
| Shoup, Gail | Gail Shoup | Director | 1958 | 1 | |
| Schulerud, Mentz | Mentz Schulerud | Director | 1958 | 1 | 1 |
| Shank, Theodore | Theodore Shank | Director | 1958 | 1 | |
| Strudwick, Nick | Nick Strudwick | Director | 2013 | 1 | |
| Suarès, Guy | Guy Suarès | Director | 1957 | 1 | 1 |
| Schuler, David | David Schuler | Director | 2013 | 1 | |
| Salmelainen, Eino | Eino Salmelainen | Director | 1957 | 1 | |
| Staub, August W. | August W. Staub | Director | 1998 | 1 | 1 |
| Sombori, Sandor | Sandor Sombori | Director | 1965 | 1 | |
| Schuller, Frieder | Frieder Schuller | Director | 1975 | 1 | |
| Sterndale Bennett, E., G. | E. G. Sterndale Bennett | Director | 1952 | 1 | |
| Strasberg, Lee | Lee Strasberg | Director | 1951 | 1 | 1 |
| Schmidt-Rahmer, Hermann | Hermann Schmidt-Rahmer | Director | 1998 - 2017 | 2 | |
| Steinhardt-Unseld, Merula | Merula Steinhardt-Unseld | Director | 1998 | 1 | |
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