| Amatørteatret | Amatørteatret | | | |
| Actors from Christiania Theater | Actors from Christiania Theater | 1867 | 1 | |
| August Rasmussens Teaterselskab | August Rasmussens Teaterselskab | 1876 – 1878 | 16 | |
| August Sandberg Sällskap | August Sandberg Sällskap | 1878 – 1880 | 5 | |
| August Lindbergs Sällskap | August Lindbergs Sällskap | 1883 – 1896 | 92 | |
| Albert Ranfts Sällskap | Albert Ranfts Sällskap | 1885 – 1900 | 21 | |
| August Lindbergs turnéer | August Lindbergs turnéer | 1887 – 1897 | 37 | |
| Akademisch-Dramatischer Verein | Akademisch-Dramatischer Verein (Akademische-Dramatische Verein) | 1893 | 4 | |
| August-Kurz-Ensemble, Das | Das August-Kurz-Ensemble | 1896 | 2 | |
| Akademischer Studentenverein | Akademischer Studentenverein | 1896 | 1 | |
| Agnes Sorma und die Irving Place Theatergesellschaft, N.Y. | Agnes Sorma und die Irving Place Theatergesellschaft, N.Y. | 1898 | 1 | |
| Agnes Sorma Ensemble | Agnes Sorma Ensemble | 1900 | 11 | |
| Akademischer Verein für Kunst und Litteratur | Akademischer Verein für Kunst und Literatur (Akademischer Verein für Kunst und Litteratur) | 1902 | 1 | |
| Amsterdamsch Lyrisch Tooneel | Amsterdamsch Lyrisch Tooneel | 1902 | 1 | |
| Agrupament literari ‘Henrik Ibsen’ | Agrupament literari ‘Henrik Ibsen’ | 1904 | 1 | |
| Agrupació Avenir | Agrupació Avenir | 1905 | 1 | |
| American Academy of Dramatic Arts | American Academy of Dramatic Arts | 1907 | 2 | |
| Antrepriza D. I. Basmanova | Antrepriza D. I. Basmanova (D. I. Basmanov's Enterprise) | 1907 | 1 | |
| Agrupació Peer Gynt | Agrupació Peer Gynt | 1908 | 2 | |
| Afternoon Theatre, The | The Afternoon Theatre | 1909 | 2 | |
| Allan Holubar | Allan Holubar | 1915 | 1 | |
| Adelaide Repertory Theatre Incorporated | Adelaide Repertory Theatre Incorporated | 1917 – 1964 | 3 | |
| Artcraft Photoplay | Artcraft Photoplay | 1918 | 1 | |
| Atenea | Atenea | 1919 | 1 | |
| Albert Ranfts dramatiska turné | Albert Ranfts dramatiska turné | 1919 | 1 | |
| Associate Players | Associate Players | 1922 | 2 | |
| Asociación Obrera de Teatro | Asociación Obrera de Teatro | 1927 | 2 | |
| Association Franco-Norvégienne | Association Franco-Norvégienne | 1929 | 1 | |
| Arts Theatre Club | Arts Theatre Club | 1930 – 1931 | 6 | |
| Alexander Moissi | Alexander Moissi | 1933 | 2 | |
| Albert u. Else Bassermann | Albert u. Else Bassermann | 1933 – 1950 | 13 | |
| Agnes Straub | Agnes Straub | 1935 | 1 | |
| Arts Theatre of Cambridge, The | The Arts Theatre of Cambridge | 1936 | 4 | |
| Alfredo B. Crevenna | Alfredo B. Crevenna | 1954 | 2 | |
| Adelaide University Theatre Guild | Adelaide University Theatre Guild | 1960 – 1986 | 5 | |
| Australian Elizabethan Theatre Trust, The | The Australian Elizabethan Theatre Trust | 1970 | 3 | |
| Australia Council for the Arts | Australia Council for the Arts | 1970 – 1998 | 5 | |
| American Conservatory Theater | American Conservatory Theater | 1973 – 2007 | 8 | |
| Associazione la Maddalena | Associazione la Maddalena | 1975 | 1 | 1 |
| Akosha | Akosha | 1976 | 3 | |
| American Ibsen Theater | American Ibsen Theater | 1983 – 1985 | 6 | |
| Almeida Theatre Company, The | The Almeida Theatre Company | 1990 – 2018 | 5 | |
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