| Skorpen, Ingrid | Ingrid Skorpen | Director | 2012 | 1 | |
| Staniewski, Wlodzimierz | Wlodzimierz Staniewski | Director | 2012 | 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 | |
| Siebert, Friedrich | Friedrich Siebert | Director | 1959 | 1 | |
| Shoup, Gail | Gail Shoup | Director | 1958 | 1 | |
| Schulerud, Mentz | Mentz Schulerud | Director | 1958 | 1 | |
| Shank, Theodore | Theodore Shank | Director | 1958 | 1 | |
| Strudwick, Nick | Nick Strudwick | Director | 2013 | 1 | |
| Suarès, Guy | Guy Suarès | Director | 1957 | 1 | |
| Schuler, David | David Schuler | Director | 2013 | 1 | |
| Salmelainen, Eino | Eino Salmelainen | Director | 1957 | 1 | |
| Staub, August W. | August W. Staub | Director | 1998 | 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 | |
| Schmidt-Rahmer, Hermann | Hermann Schmidt-Rahmer | Director | 1998 | 2 | |
| Steinhardt-Unseld, Merula | Merula Steinhardt-Unseld | Director | 1998 | 1 | |
| Scholer, Robert | Robert Scholer | Director | 1950 | 1 | |
| Sierck, Hans Detlef | Hans Detlef Sierck | Director | 1923 | 3 | |
| Staniunas, John | John Staniunas | Director | 2000 | 1 | |
| Stone, Edgar | Edgar Stone | Director | 1930 | 1 | |
| Soubeyrand, Manuel | Manuel Soubeyrand | Director | 2000 | 1 | |
| Streett, William, R. | William R. Streett | Director | 1936 | 1 | |
| Sims, Jeremy | Jeremy Sims | Director | 1999 | 2 | |
| Staffe, Karin | Karin Staffe | Director | 1999 - 2000 | 1 | |
| Siebler, Harald | Harald Siebler | Director | 1999 - 2000 | 1 | |
| Scott, Siiri | Siiri Scott | Director | 1999 | 1 | |
| Skorik, Nikolai | Nikolai Skorik | Director | 1999 - 2001 | 1 | |
| Sterni, Giuseppe | Giuseppe Sterni | Director | 1937 | 1 | |
| Sarantidis, Giannoulis | Giannoulis Sarantidis | Director | 1939 - 1948 | 25 | |
| Saalborn, Louis | Louis Saalborn | Director | 1940 | 1 | |
| Sholes, Maxwell | Maxwell Sholes | Director | 1941 | 1 | |
| Spencer, Nancy | Nancy Spencer | Director | 1943 | 1 | |
| Shdanoff, George | George Shdanoff | Director | 1977 | 1 | |
| Sumner, John | John Sumner | Director | 1973 - 1977 | 2 | |
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