Alexandra Sedas is a Portuguese voice actor known for her work in anime dubs, particularly for roles in productions aired in Portugal. Her career is primarily documented through her performances in the European Portuguese versions of several well-known Japanese animated series.

Sedas's body of work includes a range of characters across different series. She voiced the characters Pedrinho, known as Pierre, in the Portuguese dub of The Adventures of Puss-in-Boots, and Catarina in the series Katry, the Cow Girl. In the anime Kaiketsu Zorro, she provided voices for Bernardo, Maria, and the character Catarina (credited as Lolita's Mother).

A significant and recurring part of her career involves the 2018 remake of the anime Captain Tsubasa. In this series, she voiced multiple characters in the Portuguese dub, including the prominent role of Ryo Ishizaki, a teammate of the protagonist. Her other roles in this Captain Tsubasa adaptation included Yukari Nishimoto and Machiko Machida. Sedas was confirmed as part of the core voice cast for the 2019 broadcast of the series on the Portuguese channel Biggs.

Beyond these examples, her portfolio demonstrates versatility across different genres and character types. She voiced the title character Naruto Uzumaki in the Portuguese dub of the long-running series Naruto. In a notable casting for the classic series, she took on the role of the protagonist Shinji Ikari in the Portuguese version of Neon Genesis Evangelion. Her work also includes children's animation, such as voicing Shizuka Minamoto and Suneo Honekawa in early dubs of Doraemon.