The 2021 Brazilian Junior Championships were held from August 25 through August 29 in São Bernardo, Brazil.
All-Around Results
| Rank | Athlete | FX | PH | SR | VT | PB | HB | AA |
| 1 | João Victor Perdigão ECP |
13.550 | 11.350 | 11.150 | 13.750 | 11.750 | 12.200 | 73.750 |
| 2 | Matheus Jorge CRF |
12.250 | 11.950 | 11.450 | 13.850 | 11.900 | 10.850 | 72.250 |
| 3 | Bruno Ferreira ADECO |
11.500 | 12.100 | 11.350 | 13.850 | 12.750 | 10.450 | 72.000 |
| 4 | Kayke Santos ADECO |
12.300 | 11.200 | 11.250 | 13.250 | 12.650 | 11.300 | 71.950 |
| 5 | José Celine PMI |
11.000 | 10.600 | 10.500 | 12.000 | 11.350 | 9.200 | 64.650 |
| 6 | Erick Trautwein ECP |
12.450 | 11.300 | 12.000 | —— | 12.200 | 12.150 | 60.100 |
| 7 | Guilherme de Amorim ECP |
11.950 | 11.200 | 11.550 | —— | 12.050 | 11.350 | 58.100 |
| 8 | José dos Santos GNU |
12.150 | 10.600 | 11.850 | —— | 11.550 | 11.550 | 57.700 |
| 9 | Gabriel Feitosa ADECO |
11.700 | 9.050 | 11.100 | —— | 10.500 | 11.400 | 53.750 |
| 10 | Rafael Akira Setor Leste |
11.300 | 9.900 | 10.100 | —— | 11.050 | 9.500 | 51.850 |
| 11 | Rafael Pamplona Setor Leste |
9.300 | 10.850 | 9.500 | —— | 11.150 | 10.550 | 51.350 |
| 12 | Hiago Campos PMI |
—— | 10.350 | 10.000 | —— | 10.800 | 5.600 | 36.750 |
| 13 | Gabriel de Souza ECP |
13.400 | —— | —— | 13.600 | —— | —— | 27.000 |
Floor Final Results
| Rank | Athlete | Club | D | E | ND | Total |
| 1 | João Victor Perdigão | ECP | 5.1 | 8.600 | 13.700 | |
| 2 | Gabriel de Souza | ECP | 4.9 | 8.300 | 13.200 | |
| 3 | Kayke Santos | ADECO | 4.6 | 7.500 | 12.100 | |
| 4 | Matheus Jorge | CRF | 4.3 | 7.450 | 11.750 | |
| 5 | José dos Santos | GNU | 4.4 | 6.150 | 10.550 |
Pommels Final Results
| Rank | Athlete | Club | D | E | ND | Total |
| 1 | Matheus Jorge | CRF | 4.1 | 7.450 | 11.550 | |
| 2 | João Victor Perdigão | ECP | 3.7 | 7.350 | 11.050 | |
| 3 | Guilherme de Amorim | ECP | 3.2 | 7.500 | 10.700 | |
| 4 | Kayke Santos | ADECO | 4.1 | 6.100 | 10.200 | |
| 5 | Erick Trautwein | ECP | 2.9 | 6.400 | 9.300 | |
| 6 | Bruno Ferreira | ADECO | 3.4 | 5.900 | 9.300 |
Rings Final Results
| Rank | Athlete | Club | D | E | ND | Total |
| 1 | Erick Trautwein | ECP | 4.2 | 7.850 | 12.050 | |
| 2 | José dos Santos | GNU | 3.9 | 7.600 | 11.500 | |
| 3 | Matheus Jorge | CRF | 4.0 | 7.400 | 11.400 | |
| 4 | Guilherme de Amorim | ECP | 4.0 | 7.400 | 11.400 | |
| 5 | Kayke Santos | ADECO | 3.5 | 7.250 | 10.750 |
Vault Final Results
| Rank | Athlete | Club | D | E | ND | Total | Average |
| 1 | João Victor Perdigão | ECP | 4.8 | 9.200 | 14.000 | 13.450 | |
| 3.3 | 9.600 | 12.900 | |||||
| 2 | Gabriel de Souza | ECP | 4.8 | 8.900 | -0.1 | 13.600 | 12.900 |
| 3.2 | 9.100 | -0.1 | 12.200 | ||||
| 3 | Kayke Santos | ADECO | 4.8 | 8.650 | -0.1 | 13.350 | 12.800 |
| 3.2 | 9.050 | 12.250 | |||||
| 4 | Matheus Jorge | CRF | 4.8 | 7.300 | -0.3 | 11.800 | 11.750 |
| 3.2 | 8.500 | 11.700 |
P-Bars Final Results
| Rank | Athlete | Club | D | E | ND | Total |
| 1 | Bruno Ferreira | ADECO | 3.9 | 9.000 | 12.900 | |
| 2 | Kayke Santos | ADECO | 3.7 | 8.800 | 12.500 | |
| 3 | Erick Trautwein | ECP | 4.1 | 8.150 | 12.250 | |
| 4 | Matheus Jorge | CRF | 4.1 | 7.500 | 11.600 | |
| 5 | Guilherme de Amorim | ECP | 4.2 | 6.950 | 11.150 |
High Bar Final Results
| Rank | Athlete | Club | D | E | ND | Total |
| 1 | Erick Trautwein | ECP | 3.8 | 8.000 | 11.800 | |
| 2 | José dos Santos | GNU | 3.9 | 7.500 | 11.400 | |
| 3 | Guilherme de Amorim | ECP | 2.8 | 8.550 | 11.350 | |
| 4 | Gabriel Feitosa | ADECO | 3.5 | 6.750 | 10.250 | |
| 5 | João Victor Perdigão | ECP | 3.2 | 4.950 | 8.150 |
The Gymternet 