| Name | Functions | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Ragnhild Arntsen | Director | 2009 | 1 | |||
| Aleksandar Ivanović Andrejev | Director | 1912 | 1 | |||
| Kristján Albertsson | Director | 1924 | 1 | |||
| Horst Antlitz | Director | 1971 - 1973 | 3 | |||
| Rae Allen | Director | 1977 | 1 | |||
| Tamás Ascher | Director | 2007 - 2012 | 7 | 1 | ||
| Hirotsugu Abe | Director | 1978 | 3 | |||
| Erwin Axer | Director | 1979 - 1990 | 3 | 1 | ||
| Sophia Alexanian | Director | 2014 | 1 | |||
| Dennis Allen | Director | 1983 | 1 | |||
| Luz Alba | Director | 1945 | 1 | |||
| Koula Antoniadi | Director | 1985 | 9 | |||
| Jean-Paul Anderhub | Director | 1983 | 2 | |||
| Larisa Artemova | Director | 2008 | 1 | |||
| Radu Afrim | Director | 2014 | 1 | |||
| Pauline Armour | Director | 2013 - 2014 | 3 | |||
| Sarah Pia Anderson | Director | 1987 - 1994 | 3 | 1 | ||
| Clinton J. Atkinson | Director | 1990 | 1 | 1 | ||
| Liz Arday | Director | 2012 | 1 | |||
| Barbara Ansorg | Director | 1990 | 1 | |||
| Neil Geoffrey Armfield | Director | 1988 - 1991 | 2 | 1 | ||
| Jöns Andersson | Director | 1961 - 1991 | 3 | 1 | ||
| Carlos Avilez | Director | 1992 | 1 | |||
| José Luis Alonso | Director | 1982 | 2 | |||
| Richard Albert | Director | 1991 | 1 | 1 | ||
| Detlef Altenbeck | Director | 1994 - 2005 | 2 | 1 | ||
| Carlos Aguilera | Director | 1994 - 1997 | 2 | |||
| Mary Arbenz | Director | 1967 | 1 | |||
| Martin Ankermann | Director | 1965 - 1967 | 2 | |||
| Folke Abenius | Director | 1966 | 1 | |||
| Ruy Antunes | Director | 1966 | 1 | |||
| Erwin Arlt | Director | 1965 | 1 | |||
| Wolfram Apprich | Director | 2000 - 2014 | 16 | |||
| T. Achramkova | Director | 2002 | 1 | |||
| Bill Alexander | Director | 2002 | 1 | |||
| Norman Armour | Director | 2002 | 1 | |||
| Robert A. O'Connell | Director | 2003 | 1 | |||
| Robert Allen | Director | 2001 | 1 | |||
| Róbert Alföldi | Director | 2012 - 2018 | 2 | |||
| Juraj Augustín | Director | 2013 | 1 | |||
| Chris Abraham | Director | 2003 | 1 | 1 | ||
| Jan Aust | Director | 2001 - 2008 | 4 | |||