Mario Vargas is a Chilean voice actor known for his work in Latin American Spanish dubs of anime and other animated productions. Information about his career is primarily documented through his roles in anime series and films that have been dubbed in Chile.

He is recognized for his role as Weisz Steiner, the mechanical engineer and former thief, in the anime adaptation of Hiro Mashima's Edens Zero. Vargas provided the voice for the younger version of the character, Weisz Steiner from the year X442, for the series' Latin American Spanish dub. This dubbing was carried out at the studio DINT Doblajes Internacionales in Chile, and he later reprised the role for the anime's second season. His performance in this role was noted for its fitting and entertaining interpretation.

In addition to his work on Edens Zero, Vargas voiced the character of Suzu's Father in the Chilean Spanish dub of the critically acclaimed film Belle. His other credits in anime dubbing include roles in the ONA series OBSOLETE and the film Words Bubble Up Like Soda Pop, both for their Chilean Spanish adaptations. These roles highlight his involvement in bringing various Japanese animated works to Spanish-speaking audiences in Latin America.