Seth Magill is an American voice actor known for his work in English dubs of Japanese anime series, primarily for Funimation. His career is characterized by a range of supporting and principal roles that contribute to the English-language adaptations of popular shows.

Magill provided the voice for Nathan Bilstein in the science fiction series RErideD: Derrida Who Leaps Through Time. In this 2018 anime, Nathan is a scientist and the best friend of the protagonist, Derrida Yvain, whose discovery of a critical flaw in a new autonomous machine sets the story's conspiracy in motion. He voiced the character for the English dub produced by Funimation.

In the sports anime Skate-Leading Stars, which aired in 2021, Magill voiced the character Hajime Ishikawa. Hajime is a skater associated with Chutei University Kamimaezu High School, one of the competing teams in the series' unique team-based figure skating competition. The English dub for this series was also produced and released by Funimation.

One of his more prominent roles is that of Koujirou Sasahara in the acclaimed comedy series Nichijou - My Ordinary Life. Magill voiced the flamboyant and perpetually calm high school student for the series' first English dub, which was produced by Funimation and released on home video in 2019. Koujirou, known for riding a goat to school and his aristocratic mannerisms despite coming from a family of farmers, is a memorable character in the series, and Magill's performance was part of a large ensemble cast brought together for the long-awaited English adaptation.

While specific information about recurring collaborations or formal awards is not readily available, Magill's body of work to date shows a clear and ongoing association with Funimation, a major producer of English-dubbed anime. His roles, from the dramatic Skate-Leading Stars to the comedic Nichijou, demonstrate his ability to work across genres within the English dubbing industry. Information regarding a voice role in the series Nekopara could not be verified.