The 2021 Campeonato Brasileiro Feminino A-1 (officially the Brasileirão Feminino Neoenergia 2021 for sponsorship reasons) was the 9th season of the Campeonato Brasileiro de Futebol Feminino Série A1, the top level of women's football in Brazil, and the 5th edition in a Série A1 since its establishment in 2016. The tournament was organized by the Brazilian Football Confederation (CBF). It started on 17 April and ended on 26 September 2021. In the finals, the defending champions Corinthians won their third title after defeating Palmeiras 4–1 on aggregate.