Keith Silverstein is an American voice actor, known for lending his voice to English versions of Japanese anime and video games. He is best known for his roles as Zasalamel in the Soulcalibur series, Hisoka in Hunter × Hunter, Zhongli in Genshin Impact, Gabriel Agreste a.k.a. Hawk Moth (Shadow Moth in season 4 and Monarch in season 5) and Betterfly in Miraculous: Tales of Ladybug & Cat Noir, Torbjörn Lindholm in Overwatch, Vector the Crocodile in the Sonic the Hedgehog video games, Robert E.O. Speedwagon in JoJo's Bizarre Adventure, Masamichi Yaga and Mechamaru in Jujutsu Kaisen, Kurozumi Orochi in One Piece, Ōgai Mori in Bungo Stray Dogs, Johan Liebert in Monster, and Epsilon in Pluto, and Shido in Persona 5

Keith Silverstein has also ventured into radio work, which includes doing the voices of FBI agent Peter Bourland and Santo in Focus on the Family's long-running Christian radio drama Adventures in Odyssey, George in I'll Be Home For Christmas, Carl in Sunday Chronicles, as well as multiple radio spots.

Silverstein has now been married to Rosemary Do since October 10, 2010. They have two daughters. Silverstein is Jewish.