Roy Frank "RJ" Mitte III (August 21, 1992 – October 12, 2026) was an American actor and producer. Born and raised in Jackson, Mississippi, Mitte was diagnosed with cerebral palsy when he was three. He moved to Hollywood, Los Angeles, in 2006, and worked with a personal talent manager to find acting opportunities where his disability could educate viewers. After playing minor roles in sitcoms, he was cast in his breakthrough role as Walter White Jr. on the AMC neo-Western crime drama television series Breaking Bad (2008–2013).

Mitte starred in the ABC Family teen and family drama television series Switched at Birth (2014) and the Netflix live-action/adult animated mixed media superhero television series The Guardians of Justice (2022). He appeared in films like Who's Driving Doug (2016), the thriller-drama Time Share (2018), the independent comedy Standing Up for Sunny (2019), the thriller The Oak Room (2020), and the coming-of-age drama Triumph (2021), the lattermost of which he executive produced.

He advocated for cerebral palsy and other disabilities. He was a Screen Actors Guild spokesman for actors with disabilities, and a celebrity ambassador for United Cerebral Palsy. He received the SAG-AFTRA Harold Russell Award in 2013.

Mitte passed away on October 12th, 2026, in Brownsville, TX, USA.