
Jonjo O'Neill
Department: Acting
Biography
Jonjo O'Neill is an actor from Northern Ireland known for his stage and television work. O'Neill was born in Belfast, grew up in the Whiterock Road area and was educated at St Mary's Grammar School. Growing up he was passionate about musical theatre and was a member of Ulster Youth Theatre and performed with the Ulster Theatre Company. In 1996 at the age of 18 he won a place and a full scholarship to the Guildford School of Acting, and moved to England. His first television role was the year he graduated from drama school, in Extremely Dangerous (1999). A member of the Royal Shakespeare Company (RSC) 2009-2011 ensemble, his roles included Mercutio in Romeo and Juliet, Orlando in As You Like It, and Launcelot in Morte D'Arthur. His performances during the RSC's six-week residency at Park Avenue Armory in New York were hailed as "forceful" and "irresistible." At the 2012 World Shakespeare Festival in Stratford-upon-Avon, O'Neill played the title role in Roxana Silbert's production of Richard III at the Swan Theatre. In 2012 he won praise for his performance in Lucy Prebble's play The Effect at the Royal National Theatre headlining alongside Billie Piper, whom he later appeared alongside in the 2013 fiftieth anniversary episode of Doctor Who: "The Day of the Doctor". He also appeared in "The Mortal Remains," the final vignette in the Coen brothers's film The Ballad of Buster Scruggs (2018).
Known For

RSC Live: The Comedy of Errors
2009

The Octopus Nest
2019

All the Old Knives
2022

Operation Mincemeat
2022

The Gentleman Thief
—

Dragonheart 3: The Sorcerer's Curse
2015

Doctor Who: The Day of the Doctor
2013

Defiance
2008

Bad Sugar
2012

Oasis
2017

On Chesil Beach
2018

The Ballad of Buster Scruggs
2018

The Year London Blew Up
2005

Rare Beasts
2021

RSC Live: As You Like It
2010

Here Before
2022

Murphy's Stroke
1980

Patrick Melrose
2018

Vera
2011

Stephen
2021

Dalgliesh
2021

Constantine
2014

Fortitude
2015

Oasis
2017

A Touch of Frost
1992

The New Look
2024

Bloodlands
2021

Bad Sisters
2022

Homeland
2011

Pennyworth: The Origin of Batman's Butler
2019

The Queen's Gambit
2020

Nightsleeper
2024

The Day of the Jackal
2024

Andor
2022

Band of Brothers
2001

Industry
2020

Murphy's Law
2001