Ben Stillwell is an American actor and voice actor known for his work in both live-action television and English dub productions for anime. He was born on May 23, 1996, in the United States. His early career included training as an actor beginning in 2008 and studying improvisation from 2009. He attended the Lavilla School of the Arts in Jacksonville, Florida, before relocating to Los Angeles, California. His first professional role came in 2010 with a short film titled Mad Dog and the Flyboy. Stillwell has also worked as a writer, completing his first pilot script at the age of sixteen and writing sketch comedy and sitcom specifications. He has trained in improvisation and comedy at prominent institutions including Second City, The Groundlings, and LA Connection.

In anime voice acting, Ben Stillwell is recognized for providing the English dub voice of Louis Miller in the series Secrets of the Silent Witch. This production was announced by Crunchyroll, with the English dub premiering on July 18, 2025. In this fantasy series, he voices the character opposite lead voice actress Alejandra Reynoso as Monica.

Beyond his work in anime, Stillwell has built a substantial career in live-action television with a range of recurring and guest roles. He is known for playing Michael Siletti on TNT's Murder in the First, Zach on Teen Wolf, and Owen on Lab Rats. His other television credits include roles on Grey's Anatomy as James, Sullivan & Son as Nathan, Criminal Minds as Evan Braun, Shake It Up as James, and Richie Rich as Camden. He has also appeared in feature films, including a role as Todd in the horror anthology Tales of Halloween. His work in pilot episodes includes a series regular role as Nicholas on the Fox pilot Bad Family, a lead role as Zuke on the pilot There Goes the Planet, and a lead role as Adam on the Cartoon Network live-action pilot Attention Students.