John Gallagher Jr.

June 17, 1984 (age 42) Wilmington, Delaware, USA

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.

His titles like 10 Cloverfield Lane, Hush, and The Belko Experiment - his biggest roles first.
Last updated: August 17, 2026

Watched: 0/27

Weighted avg: 6.26 /10

1

1

10 Cloverfield Lane

2016March 2016 by Dan Trachtenberg

Starring as Emmett

Starring as Emmett

6.59 Good
2

2

Hush

2016March 2016 by Mike Flanagan

Lead role as The Man

Lead role as The Man

6.29 Good--
3

3

The Belko Experiment

2017March 2017 by Greg McLean

Lead role as Mike Milch

Lead role as Mike Milch

5.69 Okay+
4

4

Peppermint

2018September 2018 by Pierre Morel

Starring as Detective Stan Carmichael

Starring as Detective Stan Carmichael

6.29 Good--
5

5

Underwater

2020January 2020 by William Eubank

Supporting as Liam Smith

Supporting as Liam Smith

5.81 Okay+
6

6

Short Term 12

2013August 2013 by Destin Daniel Cretton

Starring as Mason

Starring as Mason

7.37 Excellent--
7

7

Whatever Works

2009June 2009 by Woody Allen

Minor role as Perry

Minor role as Perry

6.65 Good
8

8

Jonah Hex

2010June 2010 by Jimmy Hayward

Supporting as Second Lt. Evan

Supporting as Second Lt. Evan

4.46 Mediocre
9

9

Come Play

2020October 2020 by Jacob Chase

Starring as Marty

Starring as Marty

5.96 Okay++
10

10

The Miseducation of Cameron Post

2018July 2018 by Desiree Akhavan

Supporting as Reverend Rick

Supporting as Reverend Rick

6.45 Good-
11

11

The Newsroom

2012–2014 by Aaron Sorkin

Starring as James Harper

Starring as James Harper

7.27 Excellent--
12

12

I.S.S.

2024January 2024 by Gabriela Cowperthwaite

Starring as Christian Campbell

Starring as Christian Campbell

5.29 Okay-
13

13

Abandoned

2022June 2022 by Spencer Squire

Starring as Alex

Starring as Alex

5.36 Okay-
14

14

The Best of Enemies

2019April 2019 by Robin Bissell

Supporting as Lee Trombley

Supporting as Lee Trombley

6.96 Good+
15

15

Olive Kitteridge

2014 by Jane Anderson

Supporting as Christopher Kitteridge

Supporting as Christopher Kitteridge

6.65 Good
16

16

Margaret

2011September 2011 by Kenneth Lonergan

Supporting as Darren

Supporting as Darren

5.94 Okay++
17

17

Which Brings Me to You

2023December 2023 by Peter Hutchings

Starring as Wallace

Starring as Wallace

5.80 Okay+
18

18

Pieces of April

2003October 2003 by Peter Hedges

Supporting as Timmy Burns

Supporting as Timmy Burns

6.04 Okay++
19

19

Gone in the Night

2022July 2022 by Eli Horowitz

Starring as Max

Starring as Max

5.24 Okay-
20

20

The Heart Machine

2014October 2014 by Zachary Wigon

Lead role as Cody

Lead role as Cody

5.61 Okay
21

21

The Good Student

2006January 2006 by David Ostry

Supporting as Brett Mullen

Supporting as Brett Mullen

5.25 Okay-
22

22

Spring Awakening: Those You've Known

2022May 2022 by Michael John Warren

Starring as Self - Moritz

Starring as Self - Moritz

6.24 Good--
23

23

Broadway Idiot

2013October 2013 by Doug Hamilton

Starring as Self (archive footage)

Starring as Self (archive footage)

6.14 Good--
24

24

American Woman

2019September 2019 by Semi Chellas

Starring as Juan

Starring as Juan

5.58 Okay
25

25

Sadie

2018October 2018 by Megan Griffiths

Starring as Cyrus

Starring as Cyrus

6.10 Okay++
26

26

The Flamingo Rising

2001February 2001 by Martha Coolidge

Supporting as Gary

Supporting as Gary

Needs more reviews
27

27

The Exorcist: Martyrs

2027March 2027 by Mike Flanagan

Minor role

Minor role

Needs more reviews