| Merilin Aasa | MTÜ Orca Swim Club | Swimming | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Aerobics and group trainings | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Athletics | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Basketball | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Football | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Health sport (running and walking) | Harjumaa |
| Moonika Aava | Laagri Huvialakool | Other sports | Harjumaa |
| Andra Aavik | Spordiklubi Neemeco | Volleyball | Harjumaa |
| Juku-Kalle Adrat | Kuusalu Tenniseklubi | Tennis | Harjumaa |
| Jelena Agafontseva | Tip-Top Klub | Gymnastics | Harjumaa |
| Iryna Akimkina | Spinmaster MTÜ | Table tennis | Harjumaa |
| Karl Kristian Alasi | MTÜ Team Sorokin | Freestyle skiing | Harjumaa |
| Igor Aleksandrov | Pakri Spordiklubi | Football | Harjumaa |
| Jelena Alimova | Tantsuteater Polly | Gymnastics | Harjumaa |
| Rene Aljas | MTÜ FC Kose | Football | Harjumaa |
| Krista Aller-Lönnqvist | Spordiklubi Viimsi Veeklubi | Swimming | Harjumaa |
| Silver Allik | Spordiklubi KETS | Basketball | Harjumaa |
| Silver Allik | Spordiklubi KETS | Floorball | Harjumaa |
| Silver Allik | Spordiklubi KETS | Football | Harjumaa |
| Georg-Joosep Allikas | Spordiklubi Airpark | Cycling | Harjumaa |
| Jane Aluve | Surfy MTÜ | Sailing | Harjumaa |
| Jelena Amberg | Maardu Lauatenniseklubi | Table tennis | Harjumaa |
| Andrei Ambros | MTÜ Laskespordiklubi Taktikaline Grupp | Martial arts (other) | Harjumaa |
| Andrei Ambros | MTÜ Laskespordiklubi Taktikaline Grupp | Practical shooting in hunting | Harjumaa |
| Kelly Anijärv | Harku valla huvikool | Other sports dances | Harjumaa |
