| Atkins |
| Atlanta Rose Limited |
| Attitude is Everything |
| Audio Always Limited |
| Audiobooks.com |
| Augustus Brandt Antiques International Limited |
| Aurelia Centro S.r.l. |
| Australian Council for Educational Research Limited (ACER) |
| Autostrada Biennale |
| Avallain AG |
| Avalon Organics |
| Aveda |
| Avery Dennison Corporation |
| Aviva Plc |
| Avon Products Inc |
| AVX Corporation |
| Awash International Bank S.C. |
| Awaze Vacation Rentals Ltd |
| AXA Group |
| AXA Investment Managers |
| AXE Ceremonia (Bravo por Ceremonia, S.A.P.I. de C.V.) |
| aXiomatic LLC. |
| Ayin Network |
| Ayrinti Publishing House |
| Ayuntamiento de Madrid |