| Bennett , Genevieve | Genevieve Bennett | Director | 2010 | 1 | |
| Brainin, Risa | Risa Brainin | Director | 2010 | 1 | |
| Brandis, Jasper | Jasper Brandis | Director | 2010 – 2011 | 2 | |
| Baldwin, Craig | Craig Baldwin | Director | 2009 | 1 | |
| Bradford, Blake | Blake Bradford | Director | 2011 | 1 | |
| Braun, Manuel | Manuel Braun | Director | 2016 | 1 | |
| Berk, Ingo | Ingo Berk | Director | 2011 – 2016 | 2 | |
| Bauer, Claudia | Claudia Bauer | Director | 2011 | 2 | |
| Birtwistle, Michael | Michael Birtwistle | Director | 1964 | 1 | |
| Baron, Dedi | Dedi Baron | Director | 2013 | 1 | |
| Baqué, Claude | Claude Baqué | Director | 2012 | 11 | |
| Băleanu, Petre Sava | Petre Sava Băleanu | Director | 1965 | 4 | |
| Borgmann , Robert | Robert Borgmann | Director | 2012 – 2013 | 1 | |
| Baumeister, Eva-Maria | Eva-Maria Baumeister | Director | 2013 | 1 | |
| Byl, Lisa | Lisa Byl | Director | 2014 – 2015 | 1 | |
| Berès, Julie | Julie Berès | Director | 2015 | 15 | |
| Brandon, James, R. | James R. Brandon | Director | 1964 | 1 | |
| Barnhill, James, O. | James O. Barnhill | Director | 1963 – 1971 | 2 | |
| Bradley, Jeana | Jeana Bradley | Director | 1963 | 1 | |
| Butler, Oliver | Oliver Butler | Director | 2016 – 2020 | 2 | |
| Bristow, Eugene, K. | Eugene K. Bristow | Director | 1963 | 1 | |
| Bernhardt, Melvin | Melvin Bernhardt | Director | 1962 | 1 | |
| Bigseth, Thor | Thor Bigseth | Director | 1962 | 1 | |
| Bosher, Shane | Shane Bosher | Director | 2011 | 1 | |
| Blondel, Jean-Christophe | Jean-Christophe Blondel | Director | 2012 – 2013 | 13 | |
| Brinkmann, Joachim | Joachim Brinkmann | Director | 1960 | 1 | |
| Bassuk, David | David Bassuk | Director | 2011 – 2013 | 2 | |
| Blyth, Benjamin | Benjamin Blyth | Director | 2013 | 1 | |
| Beilharz, Manfred | Manfred Beilharz | Director | 2013 – 2014 | 1 | |
| Bumbeşti, Victor | Victor Bumbeşti | Director | 1926 – 1929 | 4 | |
| Bán, Ernest | Ernest Bán | Director | 1974 | 1 | |
| Budavári, Réka | Réka Budavári | Director | 2016 – 2019 | 2 | |
| Binder, Raimund | Raimund Binder | Director | 1974 | 1 | |
| Belgrader, Andrei | Andrei Belgrader | Director | 2013 | 1 | |
| Biltz, Karl-Peter | Karl-Peter Biltz | Director | 1959 | 1 | |
| Beard, Peter | Peter Beard | Director | 2013 | 1 | |
| Bartle, Barry | Barry Bartle | Director | 1957 | 1 | |
| Blattner, Lee | Lee Blattner | Director | 1956 | 1 | |
| Brunken, Walter | Walter Brunken | Director | 1956 | 1 | |
| Bürgin, Kurt | Kurt Bürgin | Director | 1956 | 1 | |
| Baas, Cas | Cas Baas | Director | 1956 | 1 | |
| Brooks, Hal | Hal Brooks | Director | 2016 | 1 | |
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