Bill Switzer, born March 28, 1984, is an American-Canadian voice, film, and television actor active in the entertainment industry from 1996 onward. He is recognized for his extensive voice work in animated series and English-language dubs of Japanese anime, particularly during the late 1990s and early 2000s.

Switzer's career in anime includes several notable roles in major franchises. He is known for voicing Sai Argyle in Mobile Suit Gundam Seed and its related special edition, a role he reprised in Mobile Suit Gundam Seed Destiny. In the same franchise, he provided the voice for Hathaway Noah in the feature film Mobile Suit Gundam: Char's Counterattack. His other prominent anime credits include the role of Chaud Blaze in MegaMan NT Warrior, Ichirou Sumishiba in Dragon Drive, and Ikumi Oze in Infinite Ryvius.

Beyond these specific roles, Switzer contributed to a variety of other anime series. His filmography includes voicing Eli Moon in Cardcaptors, Jamie Hemeros in Zoids: New Century Zero, as well as supporting roles in Ranma ½, Master Keaton, Trouble Chocolate, and Boys Over Flowers. He also performed the voice of Sasaki in the English dub of the Death Note live-action film.

Outside of anime, Switzer was a leading voice actor for several Western animated productions. He is perhaps best known as the voice of Presley Carnavon in Mummies Alive! and Harvey Kinkle in both Sabrina: The Animated Series and Sabrina's Secret Life. He also voiced Sam "Cannonball" Guthrie in X-Men: Evolution, Shade in Silverwing, and Stingo in Rainbow Fish. In live-action, he had a leading role in the television series Eerie, Indiana: The Other Dimension and starred as Owen Walters in the film Mr. Rice's Secret. For his performance in The Christmas List, Switzer received a nomination for a Young Artist Award.