| Name | Functions  | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Anne Marie Allen | Costume Designer | 2004 | 1 | |||
| Emily Albright | Costume Designer | 2005 - 2006 | 3 | |||
| Kristīne Abika | Costume Designer | 2005 | 3 | |||
| - Arafat | Costume Designer | 2006 | 3 | |||
| Alejandro Andújar | Costume Designer | 2007 | 6 | |||
| Sonja Albartus | Costume Designer | 2006 | 1 | |||
| Jessica Arthur | Costume Designer | 2006 | 1 | |||
| Bjørnar Aaslund | Costume Designer | 2006 | 1 | |||
| Eileen Apfelbaum | Costume Designer | 2008 | 1 | |||
| Paridokht Abedinnejad | Costume Designer | 2008 - 2009 | 2 | |||
| Loyce Arthur | Costume Designer | 2009 | 1 | |||
| Kjartan Annesen | Costume Designer | 2008 | 1 | |||
| Geraldine Arnold | Costume Designer | 2009 - 2018 | 6 | |||
| Axel Aust | Costume Designer | 2012 - 2016 | 11 | |||
| Hildegard Altmeyer | Costume Designer | 2016 | 1 | |||
| Maria Armengol | Costume Designer | 2012 - 2013 | 5 | |||
| Diana Ammann | Costume Designer | 2013 | 1 | |||
| Anne Autran | Costume Designer | 2012 - 2013 | 4 | |||
| Erik Andor | Costume Designer | 2012 | 1 | |||
| - Annequin | Costume Designer | 1961 | 1 | |||
| Gisela Appelt | Costume Designer | 1961 | 1 | |||
| Bjanka Adžić | Costume Designer | 2011 | 1 | |||
| Nancy Anderson | Costume Designer | 1958 | 1 | |||
| Elsie Allen | Costume Designer | 1933 | 1 | |||
| Anne Ar Moal | Costume Designer | 1999 | 10 | |||
| Birgitta Palm Andersson | Costume Designer | 2000 | 3 | |||
| Angelina Atlagić | Costume Designer | 2000 | 1 | |||
| Riikka Aurasmaa | Costume Designer | 2013 | 1 | |||
| Gaelle Allen | Costume Designer | 1978 | 1 | |||
| Stefan Astvik | Costume Designer | 1984 | 2 | |||
| Abel Alvarado | Costume Designer | 2017 | 1 | |||
| Paula Aiello | Costume Designer | 2018 | 1 | |||
| Brenda Abbandandolo | Costume Designer | 2018 | 1 | |||
| Kyleigh Archer | Costume Designer | 2018 | 1 | |||
| Iram Anjum | Costume Designer | 2018 | 1 | |||
| Const. Apăvăloaie | Costume Designer | 1964 | 2 | |||
| Raquel Adorno | Costume Designer | 2019 | 1 | |||
| Serwan Aljaf | Costume Designer | 2016 | 1 | |||
| Oscar Armendariz Lucarini | Costume Designer | 2018 - 2020 | 2 | |||
| Stephanie Ashby-Worden | Costume Designer | 1970 | 1 | |||
| Sylvie Aubry | Costume Designer | 2012 - 2014 | 11 | |||
| Edith Almoslino | Costume Designer | 1976 | 1 | |||