Beau Christian Knapp (born April 17, 1989) is an American actor. He is known for his roles in The Signal (2014), Southpaw (2015), Seven Seconds (2018) and Death Wish (2018). In 2021, he starred in the TV series adaptation of The Lost Symbol.
Early life Knapp was born in Los Angeles County, California.
Career In 2011, Knapp made his film debut as Breen in the science-fiction adventure film Super 8. He played Denny in the horror thriller film No One Lives (2012). On television, Knapp appeared in a 2013 episode of the television series Bones.
Other film roles include the character Jonah Breck in the science fiction thriller The Signal (2014), Jackson in the drama You're Not You (2014), Kenan Boyle in the crime thriller Run All Night (2015), and Jon Jon in the boxing drama Southpaw (2015).
In 2016, Knapp played the best friend of Chris Pine's character in the disaster drama film The Finest Hours. He then played the villain Blue Face in the mystery thriller The Nice Guys, as well as violent Crack in the war film Billy Lynn's Long Halftime Walk.
Knapp appeared in the Netflix war drama film Sand Castle (2017), and in a co-starring role in the Netflix series Seven Seconds (2018).
Knapp appeared as the main villain, opposite Bruce Willis, in Eli Roth's remake of Death Wish. He also played the main antagonist in Measure of a Man. In 2024, Knapp portrayed Drew Franklin in season 7 of SEAL Team. In 2025, Knapp had a major role in season three of Tulsa King on Paramount.
Filmography Film
Year Title Role 2011 Super 8 Breen 2012 No One Lives Denny2014 The Signal Jonah You're Not You Jackson2015 Run All Night Kenan Boyle What Lola Wants Marlo Southpaw "Jon-Jon" The Gift Detective Walker2016 The Finest Hours Mel Gouthro Vincent N Roxxy Daryl The Nice Guys "Blueface" Billy Lynn's Long Halftime Walk "Crack"2017 Sand Castle Sergeant Burton My Days of Mercy Toby2018 Death Wish Knox Measure of a Man Willie Rumson Destroyer Jason "Jay" Bird2019 Crypto Martin Duran Semper Fi "Milk" Milkowski American Skin Officer Mike Randall Black and Blue "Smitty"2021 Ida Red Jay Mosquito State Richard Boca The Guilty Dru Nashe (voice) 2023 Little Dixie Raphael "Cuco" Prado The Bikeriders Wahoo 2024 Road House Vince Long Gone Heroes West 2026
Television Year Title RoleNotes 2013 Bones Zane Reynolds Episode: "The Secret in the Siege" 2015 Edge: The Loner Little Bill TV movie 2017 Shots Fired Deputy Caleb Brooks Main role 2018 Seven Seconds Peter Jablonski Main role2020 The Good Lord Bird Owen Brown Main role L.A.'s Finest Malcolm Ward Main role 2021 The Lost Symbol Mal'akh Main role2022 Law & Order: Organized Crime Mark Sirenko Episode: "Gimme Shelter Part 1" Law & Order: Special Victims Unit Mark Sirenko Episode: "Gimme Shelter Part 2" Law & Order Mark Sirenko Episode: "Gimme Shelter Part 3" 2024 SEAL Team Drew Franklin 10 episodes 2024–2025 FBI: International Greg Csonka 6 Episodes 2025 Tulsa King Cole Dunmire Season 3
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