Saúl Alvar is a Mexican voice actor known for his extensive work in dubbing anime, films, and television series for the Latin American market. He is the owner of the dubbing studio ADN Studios México.

He is best known for his work in the anime series Saint Seiya, also known as Los Caballeros del Zodiaco. Alvar provided the voice for the character Scorpio Milo across multiple installments of the franchise. This includes the Asgard and Poseidon sagas of the original series, as well as the Hades Chapter: Sanctuary, Hades Chapter: Inferno, and Hades Chapter: Elysion in the DVD versions. He also voiced several other characters in the series, such as Shaka de Virgo, Ichi de Hydra, and others during various episodes.

Beyond his prominent role in Saint Seiya, Alvar has contributed to other animated projects. His work includes voicing Throttle in the series Biker Mice from Mars, Thor in the animated series Hercules, and Karnak in Fantastic Four. He also voiced several characters in the animated series Spider-Man. In anime films, he is credited with voicing multiple characters in the film Detective Conan: The Time Bombed Skyscraper. His film dubbing work includes roles in live-action movies such as Hard to Kill, My Father the Hero, and Apollo 13.