Devin Hennessy is an American voice actor, director, and entertainment professional known for his work in anime dubbing, particularly for his role as Taisei Sonoda in the Netflix English adaptation of Komi Can't Communicate. His career in voiceover is extensive and includes work on international productions for major streaming platforms like Netflix and Amazon, where he has been involved in dubbing films and television shows. Beyond anime, his voice acting credits span documentaries from Russia and South America, as well as video games, such as his role as Clarus in the 2022 game Triangle Strategy.

Hennessy's professional background is multifaceted, extending beyond performance into direction and production. He has directed English ADR for international distribution in Los Angeles, with credits including the video game Dynasty Warriors 9 and the Netflix series Cocaine Coast. Alongside his wife, Valerie Hennessy, he co-founded the production company Hennessy Family Films, which creates media content and provides localization services for studios and streamers. His career also includes work in live-action television, radio broadcasting, and acting coaching, where he has taught classes and workshops in Southern California for over two decades. His role as Taisei Sonoda in Komi Can't Communicate marks one of his noted contributions to the anime industry, recorded at VSI Los Angeles.