| Description: | Most popular names for female newborns in Brazil 2021 | 
| Source: | Inofficial list, done by BabyCenter Brasil, based on the names of 325'000 newborns registered on their website | 
| Series: | Brazil | 
| Following list: | 2022 | 
| Previous list: | 2020 | 
| Highest new entries: | Allana (new at 60),  Maria Isis (new at 82),  Zoe (new at 83),  Chloe (new at 91),  Ana Sophia (new at 95) | 
| Largest rises: | Maya +31 (now at 24),  Jade +23 (now at 75),  Maria Alice +22 (now at 17),  Olívia +18 (now at 34),  Maria Helena +14 (now at 35) | 
| Largest falls: | Larissa -15 (now at 98),  Eduarda -14 (now at 100),  Maria Eduarda -11 (now at 40),  Maria Flor -11 (now at 92),  Pietra -11 (now at 93) |