| Allen, Flash | Flash Allen | Composer | 1986 | 1 | |
| Avramovski, Risto | Risto Avramovski | Composer | 1976 | 1 | |
| Akulova, Polina | Polina Akulova | Composer | 2018 – 2019 | 1 | |
| Antrobus, David | David Antrobus | Composer, Director | 2012 | 2 | |
| Anderson, Michael | Michael Anderson | Composer, Musical Director | 2003 | 2 | |
| Askø, Arvid, | Arvid Askø | Composer, Musician | 2010 | 2 | |
| Asen, Norbert | Norbert Asen | Composer, Musician | 2008 | 2 | 1 |
| Alldridge, Duncan | Duncan Alldridge | Composer, Sound Designer | 2002 | 2 | |
| Arthurs , Andy | Andy Arthurs | Composer, Sound Designer | 2007 | 2 | |
| Andersson, Dan | Dan Andersson | Composer, Sound Designer | 2008 | 2 | |
| Artz, Karl Maria | Karl Maria Artz | Conductor | 1936 | 1 | |
| Arnoldi, Guido | Guido Arnoldi | Conductor | 1936 | 1 | |
| Antal, Mátyás | Mátyás Antal | Conductor | 1971 | 1 | |
| Atamer, Nesrin | Nesrin Atamer | Conductor | 1975 – 1976 | 1 | |
| Afferni, Ugo | Ugo Afferni | Conductor | 1912 – 1913 | 1 | |
| Albrecht , Gerd | Gerd Albrecht | Conductor, Musical Director | 2007 | 2 | |
| Adshead, Patricia, | Patricia Adshead | Costume Designer | 1994 – 1995 | 1 | |
| Akimova, Irina | Irina Akimova | Costume Designer | 1999 | 1 | |
| Alberti, Karin | Karin Alberti | Costume Designer | 1979 | 2 | |
| Aston, Mary-Anne | Mary-Anne Aston | Costume Designer | 1981 | 1 | |
| Alam, Shehrezade | Shehrezade Alam | Costume Designer | 1992 – 1994 | 2 | |
| Aldredge, Theoni V. | Theoni V. Aldredge | Costume Designer | 1960 – 1982 | 8 | |
| Andresen, Wenche Solgård, | Wenche Solgård Andresen | Costume Designer | 1992 – 1994 | 5 | |
| Abbott, Tiffany | Tiffany Abbott | Costume Designer | 2007 – 2011 | 2 | |
| Anderson, Shannon | Shannon Anderson | Costume Designer | 2011 | 1 | |
| Anderson, Katarina, | Katarina Anderson | Costume Designer | 2000 | 1 | |
| Amundsen, Inger G., | Inger G. Amundsen (Inger G. Amundsen) | Costume Designer | 2000 | 1 | |
| Antonsen, Gunn, | Gunn Antonsen | Costume Designer | 2002 | 2 | |
| Anda, Ragnhild, | Ragnhild Anda | Costume Designer | 2007 | 1 | |
| Aasheim, Ane, | Ane Aasheim | Costume Designer | 2008 – 2014 | 6 | |
| Ahrens, Gesine | Gesine Ahrens | Costume Designer | 1973 | 1 | |
| Armani, Giorgio | Giorgio Armani | Costume Designer | 1998 – 2008 | 26 | |
| Austin, Nan | Nan Austin | Costume Designer | 1981 – 1997 | 2 | |
| Anýžová, Helena | Helena Anýžová | Costume Designer | 1972 | 3 | |
| Axelsson, Anne-Christine | Anne-Christine Axelsson | Costume Designer | 1998 | 1 | |
| Abbas nia, Azar | Azar Abbas nia | Costume Designer | 2009 | 1 | |
| Atik, Ken | Ken Atik | Costume Designer | 2011 | 1 | |
| Azevedo, Alziro | Alziro Azevedo | Costume Designer | 1987 | 2 | |
| Anttila, Ann-Marie | Ann-Marie Anttila | Costume Designer | 1984 | 1 | |
| Antoniotti, Lelia | Lelia Antoniotti | Costume Designer | 1987 | 2 | |
| Aldridge, Amanda | Amanda Aldridge | Costume Designer | 1991 | 1 | |
| Anderson, Evelyn, Norton | Evelyn Norton Anderson | Costume Designer | 1956 | 1 | |
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