Justin Howell is a Canadian-American stunt performer and actor originally from Mississauga, Ontario. Standing at approximately 6′3″ (1.92 m), he has been active in film and television since around 2013. Based in Toronto, he holds dual Canadian and U.S. citizenship and is bilingual in English.

He built his early career performing stunts and serving as a stunt double in numerous well-known genre productions. His credits include roles as a stunt performer in TV series like Arrow, Supergirl, Titans, The Punisher, and Batwoman, as well as utility stunt work in blockbuster films such as Avengers: Infinity War and Avengers: Endgame. In 2016, he doubled for Joel Kinnaman in Suicide Squad, and in 2019 took on stunts and doubling work in Shazam!. His résumé also includes high-profile projects such as Dark Phoenix, Bloodshot, Nightmare Alley, Nobody, Fahrenheit 451, and My Spy.