The 2021 Swiss Junior Championships were held from June 12 through June 13 in Obersiggenthal, Switzerland.
All-Around Results
| Rank | Athlete | Club | VT | UB | BB | FX | AA |
| 1 | Camille D’Aprile | Gym Serrières | 12.500 | 11.300 | 11.600 | 10.500 | 45.900 |
| 2 | Lou-Anne Citherlet | Kutu Neerach | 13.000 | 10.450 | 10.000 | 11.350 | 44.800 |
| 3 | Aimée Meyer | Satus Uster | 12.200 | 8.850 | 9.800 | 11.750 | 42.600 |
| 4 | Flora Nguyen | Gym Serrières | 11.350 | 9.550 | 10.650 | 10.200 | 41.750 |
| 5 | Michèle Gottier | Gym Berner Oberland | 11.350 | 8.900 | 10.500 | 9.850 | 40.600 |
| 6 | Chiara Giubellini | Kutu Obersiggenthal | 13.400 | —— | 10.850 | 11.950 | 36.200 |
| 7 | Lena Wagner | Gym Bernar Oberland | —— | —— | —— | 10.650 | 10.650 |
Vault Detail Results
| Rank | Athlete | Club | D | E | ND | Total | Average |
| 1 | Chiara Giubellini | Kutu Obersiggenthal | 4.6 | 8.800 | 13.400 | 13.200 | |
| 4.0 | 9.000 | 13.000 | |||||
| 2 | Lou-Anne Citherlet | Kutu Neerach | 4.0 | 9.000 | 13.000 | 12.925 | |
| 4.2 | 8.650 | 12.850 | |||||
| 3 | Aimée Meyer | Satus Uster | 3.5 | 8.700 | 12.200 | 12.200 | |
| 3.3 | 8.900 | 12.200 | |||||
| 4 | Flora Nguyen | Gym Serrières | 3.7 | 7.950 | -0.3 | 11.350 | 11.250 |
| 3.3 | 7.850 | 11.150 |
