| Evalotta Victoria Aabrams | MTÜ Orca Swim Club | Swimming | Harjumaa |
| Andra Aavik | Spordiklubi Neemeco | Volleyball | Harjumaa |
| Aaron Oliver Aaviste | MTÜ Rannahunt | Volleyball | Harjumaa |
| Mari Abel | Saue Jalgpalliklubi | Football | Harjumaa |
| Juku-Kalle Adrat | Kuusalu Tenniseklubi | Tennis | Harjumaa |
| Jelena Agafontseva | Tip-Top Klub | Gymnastics | Harjumaa |
| Grethe Aikevitšius | Wilbster OÜ | Equestrian | 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 |
| Elisabeth Alla | Padel Arenas OÜ | Padel | 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 | Other sports | 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 |
| Kenert Anniste | Rae Huvialakool | Football | Harjumaa |
| Merle Annusver | Ratsaspordiklubi Simon | Equestrian | Harjumaa |
| Fred Anton | Võitluskool | Muay Thai | Harjumaa |
