 Matthew Antoine | Bobsleigh |
 Ioannis Antoniou | Skiing |
 Vladislav Antonov | Rodelen |
 Maryna Antsybor | Skiing |
| Tetyana Antypenko | Skiing |
 Kendija Aparjode | Rodelen |
| Kristers Aparjods | Rodelen |
 Brooke Apshkrum | Rodelen |
 Ng Arabella Caroline Yili | Skiing |
 Tess Arbez | Skiing |
 Tobias Arlt | Rodelen |
| Kaillie Armbruster Humphries | Bobsleigh |
 Emily Arthur | Skiing |
| Kristina Astakhova | Schaatsen |
 Yury Astapenka | Skiing |
 Isabel Atkin | Skiing |
 Cosmin Atodiresei | Rodelen |
| Larkyn Austman | Schaatsen |
| Nikita Avtaneev | Skiing |
| Irina Avvakumova | Skiing |
 Ekaterina Avvakumova | Biatlon |
 Ömer Ayçiçek | Skiing |
 Yekaterina Aydova | Schaatsen |
 Célia Aymonier | Biatlon |
| Abzal Azhgaliyev | Schaatsen |