
Acting
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 Compa…

Operation Mincemeat
as Teddy

All the Old Knives
as Ernst Pul

Here Before
as Brendon

Rare Beasts
as Dougie

The Octopus Nest
as Timothy

The Ballad of Buster Scruggs
as Englishman (segment "The Mortal Remains")

On Chesil Beach
as Phil

Oasis
as David Morgan

Dragonheart 3: The Sorcerer's Curse
as Traevor

Doctor Who: The Day of the Doctor
as McGillop

The Day of the Jackal
as Edward Carver · 5 ep.

The New Look
as Bernard Dior · 2 ep.

Nightsleeper
as Mark Hudson · 6 ep.

Andor
as Captain Kaido · 2 ep.

Bad Sisters
as Donal Flynn · 9 ep.

Dalgliesh
as Julius Marsh · 2 ep.

Bloodlands
as Ryan Savage · 3 ep.

Stephen
as DI Shaun Keep · 3 ep.

Industry
as Robin Williamson · 3 ep.

The Queen's Gambit
as Mr. Ganz · 1 ep.
Pennyworth: The Origin of Batman's Butler
2019