| Roles | Competed in Olympic Games |
|---|---|
| Sex | Female |
| Full name | Antonina Oleksandrivna•Yefremova |
| Used name | Antonina•Yefremova |
| Original name | Антоніна Олександрівна•Єфремова |
| Born | 19 July 1981 in Chasiv Yar, Donetsk (UKR) |
| Measurements | 176 cm / 60 kg |
| Affiliations | Dynamo Donetsk, Donetsk (UKR) |
| NOC | Ukraine |
Personal Best: 400 – 50.69 (2011).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2004 Summer Olympics | Athletics | UKR |
Antonina Yefremova | |||
| 400 metres, Women (Olympic) | 6 h3 r2/3 | |||||
| 4 × 400 metres Relay, Women (Olympic) | Ukraine | 6 h2 r1/2 | ||||
| 2008 Summer Olympics | Athletics | UKR |
Antonina Yefremova | |||
| 400 metres, Women (Olympic) | 6 h1 r1/3 |