Terry Klassen is a Canadian voice actor, voice director, and writer with a career spanning several decades in the animation and anime industry, primarily based in Vancouver, British Columbia. Born on March 31, 1957, in Winnipeg, Manitoba, he transitioned from a career in radio to become a prolific figure in English dubbing and animation production.

Klassen has contributed his voice to a wide array of English adaptations of anime. He is well-known for his long-standing association with the Ocean Group dub of the Dragon Ball Z series, where he voiced the iconic character Krillin, as well as Guldo, Babidi, and others. In the Inuyasha franchise, he provided the voice for the recurring character Hachi, also known as Hachiemon, a role he has reprised in later series including Yashahime: Princess Half-Demon - The Second Act. His other notable anime roles include Sakamoto in Maison Ikkoku, Hiroshi in Ranma 1/2, the Conductor in Galaxy Express 999, and various characters in series such as Zoids, Monster Rancher, and The Vision of Escaflowne.

Beyond these roles, he has also voiced characters in various animated adaptations of video games and Western cartoons. This includes voicing multiple Robot Masters, such as Cut Man, in the 1994 Mega Man animated series, and notably providing the voice of Rush, Mega Man's robotic dog, in the first episode of the OVA Mega Man: Upon a Star. His work in the Transformers franchise includes voicing Brimstone in Transformers: Cybertron, as well as Skyblast and Six Shot in Transformers: Energon. His extensive filmography also features roles such as Baby Sylvester in Baby Looney Tunes, Eddy's brother in Ed, Edd n Eddy's Big Picture Show, Impossible Man in Fantastic Four: World's Greatest Heroes, and various ponies in My Little Pony: Friendship is Magic.

In addition to his on-microphone work, Klassen is a highly respected voice director, having directed English dubs and voice tracks for a vast number of animated series and films. His directing credits include many of the shows he has also acted in, such as the Transformers series Armada, Energon, and Cybertron, as well as Ed, Edd n Eddy, Johnny Test, Martha Speaks, Pucca, and multiple Barbie films. His work as a director on the children's series Martha Speaks earned him a Daytime Emmy Award nomination for Outstanding Directing in an Animated Program. He has also worked as a scriptwriter and story editor, adapting scripts for English dubs of series like Bakugan Battle Brawlers and Beyblade. His long-standing collaborations with other prominent Canadian voice actors, such as Scott McNeil, Kathleen Barr, and David Kaye, underscore his integral role in the Vancouver voice acting community.