Diego del Arco is a Spanish voice actor primarily known for his work dubbing anime and live-action series into Spanish for the Spanish market. He has been active in the dubbing industry since at least 2017. His first credited role was providing the Spanish voice for the character Pete in an episode of the series Baywatch: Los vigilantes de la playa that same year.

Del Arco has built a career voicing a variety of characters in animated productions. He is recognized for his work in several anime series and films. A partial list of his notable roles in anime includes providing the Spanish voice for Fugan in Tiger & Bunny 2, Mikio Dojima in revisions, and Yutaka Matsuno in the Studio Ghibli film Ocean Waves. He also voiced two distinct characters in the Netflix original anime Dino Girl Gauko: Takashi Yamada and Toshio Hiraga.

Beyond the titles provided, his other anime voice work includes roles in Beyblade Burst as Katana Sakaki, in Detective Conan: The Culprit Hanzawa as Rikio, and in the Studio Ghibli films The Cat Returns as Machida and Whisper of the Heart as Sugimura for their Netflix Spain dubs. His work is characterized by providing Spanish dubbing for a range of Japanese animation, from television series to feature films.