Alexander Chernyshev (born April 4, 1960) is a versatile Russian actor and stunt performer known for his imposing physical presence and extensive work in both domestic and international action-heavy productions. He is perhaps most recognized by global audiences for his role as a Prison Guard in the fourth season of the Netflix blockbuster Stranger Things (2022), where his background in stunts helped establish the gritty realism of the Russian prison sequences. With a career rooted in the rigorous training of Eastern European cinema, Chernyshev has built a prolific filmography specializing in authoritative and "enforcer" roles, appearing in a wide array of projects including the crime drama The Heritage (2019) and the historical epic The Union of Salvation (2019).