| Bachmann, Hans-Dieter | Hans-Dieter Bachmann | Director | 1980 | 1 | |
| Biggs, Anthony | Anthony Biggs | Director | 2011 – 2012 | 2 | |
| Bowman, Robert | Robert Bowman | Director | 2007 | 1 | |
| Blakemore, Michael | Michael Blakemore | Director | 1980 | 1 | |
| Bernardi, Marco | Marco Bernardi | Director | 1994 | 2 | |
| Balkay, Géza | Géza Balkay | Director | 1994 | 1 | |
| Baskin, Roman | Roman Baskin | Director | 1997 | 1 | |
| Bodenius, Carsten | Carsten Bodenius | Director | 1995 | 1 | |
| Boulanger, Susan | Susan Boulanger | Director | 1997 | 1 | |
| Bechtel, Clemens | Clemens Bechtel | Director | 1996 | 1 | |
| Bogaerts, Sam | Sam Bogaerts | Director | 1995 – 2005 | 17 | |
| Babarczy, László | László Babarczy | Director | 1996 – 2006 | 3 | |
| Bayer, Thomas | Thomas Bayer | Director | 1995 | 1 | |
| Bocsárdi, László | László Bocsárdi | Director | 1996 | 1 | |
| Buszko, Arkadiusz | Arkadiusz Buszko | Director | 1995 | 2 | |
| Blondell, John | John Blondell | Director | 1995 – 2018 | 4 | |
| Baltuch, Lucien | Lucien Baltuch | Director | 1969 | 1 | |
| Bratkowski, Jan | Jan Bratkowski | Director | 1969 | 2 | |
| Bleck, Zina T. | Zina T. Bleck | Director | 1998 | 1 | |
| Bennett, Ariel | Ariel Bennett | Director | 1998 | 1 | |
| Bergman, Jan | Jan Bergman | Director | 1991 | 21 | |
| Brown, Arvin | Arvin Brown | Director | 1969 | 1 | |
| Brandstrup, Ole | Ole Brandstrup | Director | 1969 – 1970 | 1 | |
| Boud, John | John Boud | Director | 1968 | 1 | |
| Burt, James, Henry | James Henry Burt | Director | 1967 | 1 | |
| Balikó, Tamás | Tamás Balikó | Director | 1989 | 1 | |
| Borysławska, Aniela | Aniela Borysławska | Director | 1967 | 1 | |
| Benesch, Harald | Harald Benesch | Director | 1956 | 2 | |
| Boesche, Ekkehard | Ekkehard Boesche | Director | 1966 | 1 | |
| Braun, Horst | Horst Braun | Director | 1966 | 1 | |
| Baird, Claribel | Claribel Baird | Director | 1966 | 1 | |
| Bogart, Paul | Paul Bogart | Director | 1966 | 1 | |
| Byrska, Irena | Irena Byrska | Director | 1965 | 1 | |
| Beke , Sándor | Sándor Beke | Director | 1998 | 1 | |
| Bischoff, Thomas | Thomas Bischoff | Director | 1997 | 1 | |
| Boaz, John | John Boaz | Director | 2002 | 1 | |
| Baumrin, Seth | Seth Baumrin | Director | 2002 | 1 | |
| Bruun, Alan | Alan Bruun | Director | 2002 | 1 | |
| Barnett, Robby | Robby Barnett | Director | 1997 | 1 | |
| Bradu, Anca | Anca Bradu | Director | 2013 | 1 | |
| Bäck, Franz | Franz Bäck | Director | 2003 | 6 | |
| Basil, John | John Basil | Director | 2001 | 1 | |
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