Miriam Valencia is a Spanish actress known for her work in anime dubbing, providing voices for Spanish-language versions of animated series and films. She is primarily recognized for her long-standing role as the voice of the character Misty in the Pokémon franchise.

Valencia's career is notably defined by her extensive work on Pokémon. She provided the Spanish voice for Misty, one of the main characters, across a significant portion of the anime series. Her portrayal of Misty spanned from the original series through Pokémon the Series: Black & White, and she also voiced the character in several Pokémon films. This includes the movies Pokémon 4Ever and Pokémon Heroes - Latias & Latios, as well as the special The Mastermind of Mirage Pokémon. Beyond the main cast, Valencia also lent her voice to other characters in the Pokémon universe, such as Jupiter, Aldith, and a second voice for Sophie.

In addition to her prominent role in Pokémon, Valencia has contributed to other anime projects. In the 2007 DVD release of the anime film Hiatari Ryōkō! Yume no Naka ni Kimi ga Ita, she voiced the character Keiko Seki. She also had multiple roles in the Spanish dub of the series Mermaid Melody Pichi Pichi Pitch, where she voiced the characters Hippo, Eriru, and took over the role of Caren for a period. Another notable role outside of anime is her portrayal of Toph in the Spanish dub of the animated series Avatar: La Leyenda de Aang.