Thayná Cavalcanti, also known as Thayná Almeida, is a Brazilian stage actress and voice actress based in São Paulo. She is primarily known for her work dubbing anime into Portuguese for the Brazilian market.

Cavalcanti has provided the Brazilian Portuguese voices for several prominent anime characters. One of her most recognized roles is Saki Hanajima in the 2019 and 2020 adaptations of Fruits Basket, including Fruits Basket 2nd Season. She also voices the character Rika Furude in the recent entries of the long-running horror series, providing the Portuguese voice for the role in Higurashi: When They Cry – GOU and its sequel, Higurashi: When They Cry – SOTSU. Her other notable work includes the character Rinko Kojiro in Sword Art Online: Alicization. In addition to these roles, her portfolio includes voicing the character Sana in the later episodes of Naruto Shippuden.