Ryan Alosio is an American television, film, and voice actor who is also known for his work as a visual artist and musician. He holds citizenship in both the United States and Ireland, being the son of an Italian father and an Irish mother. His career as a performer has been active since 1993, encompassing roles in over thirty television shows, twenty-three films, and numerous national commercials.

For audiences of animated series, Alosio is best known for his voice role as Larva in the English dub of the anime series Vampire Princess Miyu. Larva is a masked Shinma (a shape-shifting demon) who becomes the protector and ally of the series' protagonist, the vampire Miyu. Alosio voiced this character for the show's entire run across its twenty-six episodes, which originally aired from 1997 to 1998. The series, created by Narumi Kakinouchi and Toshiki Hirano, follows Miyu as she guards the passage between the human world and the realm of Shinma.

Beyond his work in Japanese animation, Alosio has an extensive career as a voice actor in the video game industry. His notable roles in major gaming franchises include Herman Schultz, also known as the Shocker, in the video game adaptation of The Amazing Spider-Man 2. He also provided voices for multiple characters in the BAFTA Award-winning and Game of the Year title Fallout 4, including the synth H2-22 and the character Deacon. His other video game credits include Titanfall 2, Battlefield Hardline, and Rise of the Tomb Raider.

In addition to his voice work, Alosio has built a varied career as an on-screen actor, appearing in television series such as Monk, Lucifer, and I'm Dying Up Here, as well as films like Knife Fight and The Lost Tribe. He has also created animated characters for clients such as Warner Bros. and Cartoon Network. His professional background includes training at the Interlochen Arts Academy, from which he graduated with honors, and further education at Northwestern University and New York University.