David Fynn

Actor

David Fynn is a British-Irish actor, producer and screenwriter, best known for playing Brett in the NBC TV sitcom Undateable.

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He began playing Dewey Finn in the West End cast of Andrew Lloyd Webber's musical School of Rock (based on the 2003 film with Jack Black) in October 2016 at the New London Theatre, for which he received an Olivier Award nomination for Best Actor in a Musical in 2017.

Acting

Believe Me
TV series, 2026
as DS Steve Warrilow
Kiloran Bay
Film, 2026
as Dougal
Watch the Skies
Film, 2025
as Thor
Harlan Coben's Lazarus
TV series, 2025
as Seth McGovern
Here
Film, 2024
as Leo Beekman
Near Miss
Film, 2024
as Jim
Daddy Issues
TV series, 2024
as Derek
Belgravia: The Next Chapter
TV series, 2024
as Ross
Trolls Band Together
Film, 2023
as Biggie (voice)
National Theatre Live: Much Ado About Nothing
Film, 2022
as Dogberry
The Thief, His Wife and the Canoe
TV series, 2022
as David Leigh
The Mauritanian
Film, 2021
as Kent
The Pembrokeshire Murders
TV series, 2021
as Jonathan Hill
Trolls: TrollsTopia
TV series, 2020
as Biggie / Mr. Dinkles (voice)
Madagascar: A Little Wild
TV series, 2020
as Sir Braxton (voice)
Avenue 5
TV series, 2020
as TV Judd
Married Young
Film, 2019
as David
Whiskey Cavalier
TV series, 2019
as Todd
I'd Like to Be Alone Now
Film, 2019
as Sam
Vanity Fair
TV series, 2018
as Jos Sedley
Porn Again
TV series, 2017
as Terry
Undateable
TV series, 2014
as Brett
Big Bad World
TV series, 2013
as Oakley
The Job Lot
TV series, 2013
as Tyler Kerrigan
The Somnambulists
Film, 2012
as Man 2
National Theatre Live: She Stoops to Conquer
Film, 2012
as Tony Lumpkin
Doubt on Loan
Film, 2012
as Eddie
Deviation
Film, 2012
as Justin
Black Mirror
TV series, 2011
as Oliver
Game of Thrones
TV series, 2011
as Rennick