
John Gallagher Jr.
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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
Credits

10 Cloverfield Lane (2016)
as Emmett

Underwater (2020)
as Liam Smith

The Belko Experiment (2017)
as Mike Milch

Jonah Hex (2010)
as Second Lt. Evan

Peppermint (2018)
as Detective Stan Carmichael

Hush (2016)
as The Man

Come Play (2020)
as Marty

The Miseducation of Cameron Post (2018)
as Reverend Rick

The Best of Enemies (2019)
as Lee Trombley

Whatever Works (2009)
as Perry

Short Term 12 (2013)
as Mason

Which Brings Me to You (2023)
as Wallace

The Exorcist: Martyrs (2027)
Actor

Gone in the Night (2022)
as Max

Margaret (2011)
as Darren

I.S.S. (2024)
as Christian Campbell

Abandoned (2022)
as Alex

Pieces of April (2003)
as Timmy Burns

Spring Awakening: Those You've Known (2022)
as Self - Moritz
Swim Fishy (—)
as Abel

The Good Student (2006)
as Brett Mullen

The Same Storm (2022)
as Dale Salt

American Woman (2019)
as Juan
Short Term 12: Behind the Scenes (2014)
as Self

Sadie (2018)
as Cyrus

The Heart Machine (2014)
as Cody

The Flamingo Rising (2001)
as Gary

Eleven Days (2026)
Actor
20/20 (—)
Actor

Broadway Idiot (2013)
as Self (archive footage)





