John Howard Gallagher Jr. (born June 17, 1984) is an American actor and musician known for originating the role of Moritz Stiefel in Duncan Sheik and Steven Sater's rock musical Spring Awakening, which earned him a Tony Award for Best Featured Actor in a Musical. He also played Johnny in Green Day's Broadway musical, American Idiot, Lee in the 2011 Broadway production of Jerusalem, and Edmund in the 2016 Broadway revival of Long Day's Journey Into Night. He portrayed Jim Harper in Aaron Sorkin's drama series The Newsroom, starred in the HBO mini-series Olive Kitteridge, and played Emmett DeWitt in 10 Cloverfield Lane.
Known For
I.S.S.
Christian Campbell
2024
Which Brings Me to You
Wallace
2023
The Same Storm
Dale Salt
2022
Gone in the Night
Max
2022
Abandoned
Alex
2022
Spring Awakening: Those You've Known
Self - Moritz
2022
Art That Made Us
Self - Associate Prof. of Early Modern History · (4 episodes)
2022
Come Play
Marty
2020
Love Life
Luke Ducharme · (1 episode)
2020
Stars in the House
Self · (1 episode)
2020
Underwater
Liam Smith
2020
Modern Love
Rob · (1 episode)
2019
American Woman
Juan
2019
The Best of Enemies
Lee Trombley
2019
Sadie
Cyrus
2018
Peppermint
Detective Stan Carmichael
2018
The Miseducation of Cameron Post
Reverend Rick
2018
Westworld
Liam Dempsey · (3 episodes)
2016
Easy
Lucas · (1 episode)
2016
The Belko Experiment
Mike Milch
2016
Hush
The Man
2016
10 Cloverfield Lane
Emmett
2016
Better Call Saul
Arthur · (1 episode)
2015
Olive Kitteridge
Christopher Kitteridge · (4 episodes)
2014
The Heart Machine
Cody
2014
Short Term 12: Behind the Scenes
Self
2014
Broadway Idiot
Himself (archive footage)
2013
Short Term 12
Mason
2013
The Newsroom
James Harper · (25 episodes)
2012
Margaret
Darren Rodifer
2011
Jonah Hex
Second Lt. Evan
2010
Whatever Works
Perry
2009
Spring Awakening
Moritz Stiefel
2006
Love Monkey
Paul · (1 episode)
2006
The Good Student
Brett Mullen
2006
Pieces of April
Timmy Burns
2003
Law & Order: Criminal Intent
Gary · (1 episode)
2001
The Flamingo Rising
Gary
2001
Ed
Eric · (1 episode)
2000
The West Wing
Tyler · (2 episodes)
1999
Law & Order: Special Victims Unit
Jeff Lynwood · (1 episode)
1999
Law & Order
Terrence Holt · (1 episode)
1990
Hallmark Hall of Fame
Gary · (1 episode)
1951