| Name | Functions  | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| David Antrobus | Composer, Director | 2012 | 2 | 1 | ||
| Christopher Axworthy | Composer | 1979 - 1999 | 4 | |||
| Markus Aubrecht | Composer | 2002 | 1 | |||
| Adolphe Adam | Composer | 1894 - 2011 | 3 | |||
| Arturo Annecchino | Composer | 1997 - 2021 | 13 | |||
| Motohiko Adachi | Composer | 1984 | 1 | |||
| Helmut Alig | Composer | 1953 | 1 | |||
| Bent Axen | Composer | 1985 | 1 | |||
| Farzad Varzande Azar | Composer | 2006 | 1 | |||
| A. Arends | Composer | 1892 | 1 | |||
| Juan Amenabar | Composer | 1980 - 1981 | 2 | |||
| - Andersen | Composer | 1903 | 2 | |||
| - Albrechtson | Composer | 1903 - 1909 | 3 | |||
| Bjørn Alterhaug | Composer | 1973 | 1 | 1 | ||
| Magne Aarsand | Composer | 1993 | 1 | |||
| Vidar Aam | Composer | 1994 | 1 | |||
| Hanne T. Aasheim | Composer | 2000 - 2007 | 2 | |||
| - Apocalyptica | Composer | 2003 - 2004 | 2 | |||
| - Auber | Composer | 1916 | 1 | |||
| Harald Agersnap | Composer | 1924 | 1 | |||
| Anders Alm | Composer | 1990 - 1992 | 20 | |||
| Francesco Accolla | Composer | 1981 | 1 | |||
| Adam Arcuragi | Composer | 2013 | 1 | |||
| Sam Appleby | Composer | 1985 | 1 | |||
| Platon Andritsakis | Composer | 1994 - 1998 | 2 | |||
| Eivind Aarset | Composer | 2015 | 1 | |||
| Vincent Artaud | Composer | 2014 | 6 | |||
| Dominick Argento | Composer | 1966 | 1 | |||
| Amoret Abis | Composer | 2002 | 1 | |||
| Johann Paul Aegidius Martini | Composer | 2004 | 1 | |||
| Agamemnon - | Composer | 2004 | 1 | |||
| Thodoris Ampazis | Composer | 2004 - 2005 | 2 | |||
| Ariadni - | Composer | 2005 | 2 | |||
| Massive Attack | Composer | 2005 | 3 | |||
| Charles Aznavour | Composer | 2005 | 1 | |||
| Peter Andersson | Composer | 2001 | 1 | |||
| György Nagy Aldobolyi | Composer | 2006 | 1 | |||
| Cristian Amigo | Composer | 2006 | 1 | |||
| Giannis Anastasopoulos | Composer | 2009 | 1 | |||
| Kingsley Ash | Composer | 2012 | 1 | |||
| David Amram | Composer | 1960 | 1 | |||
| Lan Adomian | Composer | 1951 | 1 | 1 | ||