Zélia Santos is a Portuguese voice actor known for her extensive work in dubbing foreign-language content for Portuguese audiences, particularly in animation and anime series. Her career spans several decades, with her earliest listed credits dating back to the late 1980s, including work on the children's series Rua Sésamo in 1989.

Throughout the 1990s, Santos contributed to a range of animated series. She provided the Portuguese voice for the title character in Joaninha, for Wenda in Onde Está o Wally?, and for twin characters Phil and Lil in Rugrats: Os Meninos do Coro. She also voiced characters in series such as Rupert, Arthur, and Aladdin.

In the 2000s and 2010s, Santos became a prominent voice in the Portuguese dubs of numerous anime and animated properties. She is notably associated with the long-running Pokémon franchise, voicing the recurring characters Nurse Joy and Officer Jenny across several series, including Pokémon DP: Dimensão Combate, Pokémon DP: Combates Galáticos, and Pokémon DP: Vencedores da Liga Sinnoh. Her other roles in the franchise include Cassidy, Dr. Fennel in Pokémon: Preto e Branco, and Malva in Pokémon, a Série XYZ. She also provided voices for the anime series Regular Show as Eileen and Starla, and for the classic football series Campeões: Oliver e Benji, where she voiced Patty Nakazawa and Jimmy Mason.

Beyond anime, Santos's voice work is prominent in the Portuguese dubs of many Barbie animated films. Her roles in this franchise include Syrenka and Dina in Barbie em Vida de Sereia, Caprice in Barbie: Escola de Princesas, Selena in Barbie em Vida de Sereia 2, and Tara and Oddie in Barbie e as Sapatilhas Mágicas. She also voiced characters in other animated productions such as Animalia, O Fantástico Senhor Raposo, and various Bionicle films.

Her work extends to live-action dubbing as well, including the series Raven, Dance Academy, O Tempo Entre Costuras, and O Periférico. With a career encompassing nearly fifty credited roles across films and series, Zélia Santos has established herself as a versatile and enduring presence in Portuguese dubbing.