| Berliner Volksbühnen-Ensemble | Berliner Volksbühnen-Ensemble | 1895 | 3 | |
| Baktruppen | Baktruppen | 1988 – 1999 | 40 | |
| Bloomington Area Arts Council, The | The Bloomington Area Arts Council | 2002 | 1 | |
| Burning Coal Theatre Company | Burning Coal Theatre Company | 2001 | 1 | |
| Banco do Brasil | Banco do Brasil | 2002 | 1 | |
| Boston Bijou Theatre Company | Boston Bijou Theatre Company | 1907 | 1 | |
| Baylor Little Theater | Baylor Little Theater | 1928 | 2 | |
| Brisbane Festival | Brisbane Festival | 1959 – 2006 | 2 | |
| Black Inc. | Black Inc. | 1986 | 1 | |
| Berliner Ensemble | Berliner Ensemble | 1933 – 2024 | 10 | |
| Box Theatre Company | Box Theatre Company | 2002 | 1 | |
| Ben Iden Payne’s Company | Ben Iden Payne’s Company | 1911 | 1 | |
| Bohurupee | Bohurupee | 1952 – 1958 | 2 | |
| Brisbane Arts Theatre | Brisbane Arts Theatre | 1990 – 1993 | 3 | |
| Borkmanturnen | Borkmanturnen | 1897 | 9 | |
| Berliner Theatertreffen | Berliner Theatertreffen | 2000 – 2016 | 5 | |
| Berliner Festspiele | Berliner Festspiele | 1998 – 2006 | 4 | |
| BrianzAcque s.r.l | BrianzAcque s.r.l | 2021 | 6 | |
| Belmont University Theatre & Dance Department | Belmont University Theatre & Dance Department | 2004 | 1 | |
| Bluebird Photoplay | Bluebird Photoplays (Bluebird Photoplay) | 1917 | 1 | |
| Buffton Universtiy | Buffton Universtiy | | 1 | |
| Black Hills State University | Black Hills State University | 1999 | 1 | |
| Boulder's Upstart Crow Theatre Company | Boulder's Upstart Crow Theatre Company | 2003 – 2008 | 2 | |
| Byks 08 | Byks 08 | 2008 | 1 | |
| Bærum Studiescene | Bærum Studiescene | 1944 | 2 | |
| Black Swamp Players | Black Swamp Players | 2023 | 1 | |
| Beijing Modern Dance Company | Beijing Modern Dance Company | 2006 | 1 | |
| Beck Center for the Arts | Beck Center for the Arts | 2002 | 1 | |
| Budapesti Thália, A | A Budapesti Thália | | | |
| Banff Players | Banff Players | 2007 | 1 | |
| Barnet Arts Festival 99 | Barnet Arts Festival 99 | 1999 | 1 | |
| Bel Image, Le | Le Bel Image | 2009 | 1 | |
| Bregenzer Festspiele | Bregenzer Festspiele | 1950 – 1978 | 2 | |
| Borgny Hammer and Company | Borgny Hammer and Company | 1920 – 1935 | 12 | |
| BITEF 2003 | BITEF 2003 | 2003 | 1 | |
| Brisbane Repertory Theatre | Brisbane Repertory Theatre | 1928 | 1 | |
| Berliner Secessionsbühne | Berliner Secessionsbühne | 1900 | 4 | |
| B. Iden Payne Theatre (The Acting Company) | The Acting Company (B. Iden Payne Theatre (The Acting Company)) | 1994 – 1995 | 8 | |
| BABU - Barneteateret fra Bydel Alnas Barne- og Ungdomsteater | BABU - Barneteateret fra Bydel Alnas Barne- og Ungdomsteater | 2010 | 1 | |
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