| Brym, Christian | Christian Brym | Director | 1996 - 2019 | 2 | |
| Balk, H. Wesley | H. Wesley Balk | Director | 1978 | 1 | |
| Bellugi, Piero | Piero Bellugi | Director | 1978 - 1980 | 2 | |
| Bastholm, Lone | Lone Bastholm | Director | 1978 - 1981 | 2 | 1 |
| Blakstad, Kari | Kari Blakstad | Director | 1978 | 1 | |
| Bundy, James | James Bundy | Director | 2017 | 1 | |
| Bidonde, Héctor | Héctor Bidonde | Director | 1981 | 1 | |
| Blumensaadt, Norman | Norman Blumensaadt | Director | 2016 - 2019 | 2 | |
| Braak, Kai | Kai Braak | Director | 1986 | 1 | |
| Braak, Deborah | Deborah Braak | Director | 2017 | 1 | |
| Bachmann, Stefa | Stefan Bachmann | Director | 2017 | 1 | |
| Bekir, Kemal | Kemal Bekir | Director | 1982 | 1 | |
| Baker, Danette | Danette Baker | Director | 2017 | 1 | |
| Brining, James | James Brining | Director | 2017 | 1 | |
| Borny, Geoffrey | Geoffrey Borny | Director | 1997 | 1 | |
| Bonifazi, Bruno | Bruno Bonifazi | Director | 2017 | 1 | |
| Blake, Sydnee | Sydnee Blake | Director | 1972 | 1 | |
| Bagnall, Nick | Nick Bagnall | Director | 2018 | 1 | |
| Bonnell, Jesse | Jesse Bonnell | Director | 2018 | 1 | |
| Butusov, Yuri | Yuri Butusov | Director | 2018 - 2019 | 2 | |
| Bennett, Marilyn | Marilyn Bennett | Director | 2019 | 1 | |
| Beaman, Mike | Mike Beaman | Director | 2019 | 1 | |
| Baqeri, Maryam | Maryam Baqeri | Director | 2019 | 1 | |
| Baletić, Ivan | Ivan Baletić | Director | 2016 | 1 | |
| Bulić, Senka | Senka Bulić | Director | 2017 | 1 | |
| Bartulović, Niko | Niko Bartulović | Director | 1922 - 1924 | 2 | |
| Becklake, Bárbara | Bárbara Becklake | Director | 2019 | 1 | |
| Betancour, Camilo | Camilo Betancour | Director | 1976 | 1 | |
| Beobide, Iñaki | Iñaki Beobide | Director | 1965 | 1 | |
| Boix Aguado, Joaquin | Joaquin Boix Aguado | Director | 1969 | 1 | |
| Boddy, Michael | Michael Boddy | Director | 1970 | 1 | |
| Bibikova, B. | B. Bibikova | Director | 1958 | 1 | |
| Brill, Efim, Aleksandrovich | Efim Aleksandrovich Brill | Director | 1938 | 1 | |
| Brill, V. | V. Brill | Director | 1940 | 1 | |
| Bregev, Ju. | Ju. Bregev | Director | 1973 | 1 | |
| Bitjuckij, Veniamin, Semenovič | Veniamin Semenovič Bitjuckij | Director | 1979 | 1 | |
| Benkendorf, S. | S. Benkendorf | Director | 1955 | 1 | |
| Bražnik, G. | G. Bražnik | Director | 1977 | 1 | |
| Bubnov, Stepan | Stepan Bubnov | Director | | 1 | |
| Berterreix, Carlos | Carlos Berterreix | Director | 1972 | 1 | |
| Belmonte, Segundo | Segundo Belmonte | Director | 1993 | 1 | |
| Bock, John | John Bock | Director | 2020 | 1 | |
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