Isabel Valls is a Spanish voice actor known for her extensive work dubbing anime and live-action films into Spanish and Catalan. She began her career in dubbing in 1997 and has since become a prominent figure in the industry in Spain. Her body of work is characterized by a wide range of roles in animated features and series, as well as providing the Spanish voice for many well-known international actresses.

Valls has voiced lead characters in numerous acclaimed anime films. In the Studio Chizu productions, she is the voice of Aoi Aioi in Her Blue Sky and provided voices for both Mare and the Mother character in Mirai. For the films of renowned director Mamoru Hosoda, she also voiced the title character in Mary and The Witch's Flower. Her work extends to the works of Shunji Iwai, where she played Tetsuko Alice Arisugawa in The Case of Hana & Alice.

She is also recognized for her long-running association with the Case Closed franchise, where she has voiced the protagonist Conan Edogawa in various installments, including the films The Fist of Blue Sapphire and Zero the Enforcer for Spanish dubs. In Catalan dubs, she has also taken on the role of other characters in the series. Her filmography includes a variety of other prominent anime roles, such as Migaila in Buddha: The Great Departure and Buddha 2: Tezuka Osamu no Buddha - Owarinaki Tabi, Sayaka Rama in Demon City Shinjuku, Kyoko Jounouchi in Cyber City Oedo 808, and Princess Ouni in Kai Doh Maru. She also voiced Letitia in the Catalan dub of the 3D CGI film Lupin III: The First. Other credited roles include Mimiko Sakura in a Crayon Shin-chan film, Chizuru in Tokyo Marble Chocolate, and Koichi Uehara in Summer Days with Coo.

Beyond anime, Valls is widely recognized as one of the primary Spanish dubbing voices for several major Hollywood actresses, including Penélope Cruz, Kristen Stewart, Margot Robbie, and Audrey Tautou. This facet of her career, dubbing live-action blockbusters like the Twilight saga, has contributed significantly to her status as a prominent and versatile voice artist in Spain.