
Jonjo O'Neill
Born
1978-07-11
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 Compa...
Known for

The Queen's Gambit
Mr. Ganz

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

Band of Brothers
Replacement One

Homeland
TV Series

Andor
Captain Kaido

Defiance
Lazar

Constantine
Gary Lester

The Day of the Jackal
Edward Carver

Operation Mincemeat
Teddy

Doctor Who: The Day of the Doctor
McGillop

All the Old Knives
Ernst Pul

On Chesil Beach
Phil

Pennyworth: The Origin of Batman's Butler
Aleister Crowley

Patrick Melrose
Seamus Dourke

Fortitude
Ciaran Donnelly