The 2021 South American Championships were held from December 8 through December 12 in San Juan, Argentina.
All-Around Results
| Rank | Athlete | Nation | VT | UB | BB | FX | AA |
| 1 | Julia Soares | Brazil | 13.400 | 12.300 | 12.950 | 13.050 | 51.700 |
| 2 | Abigail Magistrati | Argentina | 13.250 | 10.850 | 12.900 | 12.950 | 49.950 |
| Beatriz Lima | Brazil | 13.300 | 12.250 | 11.700 | 12.700 | 49.950 | |
| 4 | Ana Luiza Lima | Brazil | 13.650 | 10.700 | 12.100 | 12.950 | 49.400 |
| 5 | Fabiola Diaz | Peru | 13.350 | 10.400 | 13.200 | 12.200 | 49.150 |
| 6 | Rocio Saucedo | Argentina | 13.400 | 12.150 | 10.650 | 12.650 | 48.850 |
| 7 | Meline Mesropian | Argentina | 13.450 | 12.600 | 12.750 | 9.650 | 48.450 |
| 8 | Beatriz Silva | Brazil | 12.250 | 12.300 | 11.400 | 12.100 | 48.050 |
| 9 | Ana Karina Mendez | Peru | 13.150 | 10.650 | 11.350 | 11.800 | 46.950 |
| Franchesca Santi | Chile | 13.300 | 11.500 | 10.300 | 11.850 | 46.950 | |
| 11 | Leila Martinez | Argentina | 13.000 | 10.650 | 11.150 | 11.550 | 46.350 |
| 12 | Angelica Mesa | Colombia | 12.500 | 10.050 | 11.250 | 12.200 | 46.000 |
| 13 | Antonia Marihuan | Chile | 12.550 | 10.850 | 10.250 | 12.000 | 45.650 |
| 14 | Alais Perea | Ecuador | 13.350 | 7.050 | 12.350 | 12.350 | 45.100 |
| 15 | Maria Catalina Pinto | Chile | 11.950 | 9.800 | 10.350 | 10.950 | 43.050 |
| 16 | Annia Teran | Peru | 11.950 | 9.100 | 10.450 | 10.400 | 41.900 |
| 17 | Ximena Rengifo | Peru | 11.800 | 8.600 | 9.700 | 10.800 | 40.900 |
| 18 | Pierina Cedrés | Uruguay | 12.350 | 7.150 | 9.400 | 10.050 | 38.950 |
| 19 | Angie Santacruz | Ecuador | 11.950 | 8.700 | 7.750 | 10.050 | 38.450 |
| 20 | Amika Every | Aruba | 11.000 | 8.450 | 11.000 | 6.700 | 37.150 |
| 21 | Camile Fonseca | Brazil | 12.050 | —— | 11.550 | 11.400 | 35.000 |
| 22 | Camila Heredia | Bolivia | 12.050 | 2.550 | 9.100 | 9.750 | 33.450 |
| 23 | Francisca Casella | Chile | 12.150 | —— | 10.100 | 9.850 | 32.100 |
| 24 | Ashley Provence | Aruba | 11.550 | 3.800 | 6.750 | 8.200 | 30.300 |
| Allison Reyes | Chile | 11.800 | 7.900 | —— | 10.600 | 30.300 | |
| 26 | Brisa Carraro | Argentina | 13.500 | 13.200 | —— | —— | 26.700 |
| 27 | Aylen Gasparri | Argentina | —— | —— | 12.000 | 11.300 | 23.300 |
| 28 | Elisa Hofmann | Chile | —— | 9.300 | 11.450 | —— | 20.750 |
| 29 | Carolyne Pedro | Brazil | —— | 12.850 | —— | —— | 12.850 |
| 30 | Fabiana Cuneo | Peru | —— | —— | 9.800 | —— | 9.800 |
Vault Final Results
| Rank | Athlete | Nation | D | E | ND | Total | Average |
| 1 | Franchesca Santi | Chile | 4.6 | 8.900 | 13.500 | 13.250 | |
| 4.2 | 8.900 | -0.1 | 13.000 | ||||
| 2 | Ana Karina Mendez | Peru | 4.6 | 8.600 | -0.1 | 13.100 | 13.100 |
| 4.6 | 8.500 | 13.100 | |||||
| 3 | Alais Perea | Ecuador | 4.6 | 8.800 | 13.400 | 13.033 | |
| 4.1 | 8.567 | 12.667 | |||||
| 4 | Brisa Carraro | Argentina | 4.6 | 8.833 | 13.433 | 12.983 | |
| 4.2 | 8.633 | -0.3 | 12.533 | ||||
| 5 | Beatriz Lima | Brazil | 4.6 | 8.900 | 13.500 | 12.883 | |
| 3.7 | 8.567 | 12.267 | |||||
| 6 | Fabiola Diaz | Peru | 4.6 | 8.533 | 13.133 | 12.717 | |
| 4.0 | 8.300 | 12.300 | |||||
| 7 | Pierina Cedrés | Uruguay | 3.7 | 8.600 | 12.300 | 12.300 | |
| 4.0 | 8.300 | 12.300 | |||||
| 8 | Francisca Casella | Chile | 3.7 | 8.567 | 12.267 | 12.017 | |
| 3.3 | 8.467 | 11.767 |
Bars Final Results
Beam Final Results
Floor Final Results
Team Results
| Rank | Nation | VT | UB | BB | FX | Total |
| 1 | BRAZIL (Camile Fonseca, Ana Luiza Lima, Beatriz Lima, Carolyne Pedro, Beatriz Silva, Julia Soares) | 52.600 | 49.700 | 48.300 | 50.800 | 201.400 |
| 2 | ARGENTINA (Brisa Carraro, Aylen Gasparri, Abigail Magistrati, Leila Martinez, Meline Mesropian, Rocio Saucedo) | 53.600 | 48.800 | 48.800 | 48.450 | 199.650 |
| 3 | CHILE (Francisca Casella, Elisa Hofmann, Antonia Marihuan, Maria Catalina Pinto, Allison Reyes, Franchesca Santi) | 49.950 | 41.450 | 42.350 | 45.400 | 179.150 |