Matt Kelley is an American voice actor known for his work in English-language dubs of anime series and films, particularly during the era of ADV Films in the 1990s and early 2000s. He is most notably recognized for providing the English voice of the character Mamoru Kusanagi in the original video animation Blue Seed Beyond. This role is a continuation of the character from the Blue Seed television series, where the character was voiced by a different actor, Jason Lee. Kelley's performance as the tortured protector Kusanagi remains his most prominently documented credit in animation.

Beyond his role in Blue Seed Beyond, Kelley's voice acting career includes appearances in several other anime series dubbed during a similar period. His credits include roles in the English adaptations of Full Metal Panic!, Generator Gawl, and All Purpose Cultural Cat Girl Nuku Nuku DASH!. He also provided voices for the film Sin: The Movie, playing multiple roles including Cop 4, a SinTEK Executive, and a Reporter. His work is associated with the era of anime localization when companies like ADV Films were producing English versions of popular Japanese series for a growing North American audience.

Information regarding Kelley's specific acting technique, extensive filmography, or notable industry awards is not detailed in public records. His body of work, however, places him among the many voice actors who contributed to the English-language anime industry during its period of expansion in the late 1990s and early 2000s.