Citadel (TV) Cast
The cast of Citadel. Updated on September 16, 2025.
41 actors
Richard Madden
as Mason Kane / Kyle Conroy (6 episodes)

Richard Madden plays Mason Kane, a skilled Citadel agent whose memory is wiped, and he starts a new life as Kyle Conroy.

Priyanka Chopra Jonas
as Nadia Sinh (6 episodes)

Priyanka Chopra Jonas portrays Nadia Sinh, a dedicated and resourceful agent working alongside Mason Kane in the Citadel organization.

Ashleigh Cummings
as Abby Conroy (6 episodes)

Ashleigh Cummings plays Abby Conroy, who is part of Kyle Conroy's life in the series.

Roland Møller
as Anders Silje / Davik Silje (6 episodes)

Roland Møller takes on dual roles as Anders Silje and Davik Silje, key characters in the show's narrative.

Osy Ikhile
as Carter Spence (6 episodes)

Osy Ikhile is Carter Spence, a character involved in the intriguing developments of the Citadel storyline.

Caoilinn Springall
as Hendrix Conroy (6 episodes)

Caoilinn Springall plays Hendrix Conroy, a character connected to Kyle Conroy's life.

Lesley Manville
as Dahlia Archer (6 episodes)

Lesley Manville appears as Dahlia Archer, who leads the rival organization Manticore.

Stanley Tucci
as Bernard Orlick (6 episodes)

Stanley Tucci is Bernard Orlick, an old colleague who brings Mason Kane back into the spy world.

Sen Monro
as (6 episodes)

Sen Monro portrays Balduino Basto, contributing to the espionage elements of the series.

Moira Kelly
as Joe (5 episodes)

Moira Kelly plays Joe, whose role intertwines with the main characters in the series.

Lev Gorn
as Gregor Yovanavich (1 episode)

Lev Gorn portrays Gregor Yovanavich, a character who plays a part in the unfolding events of Citadel.

Gianfranco Terrin
as Italian Doctor (1 episode)
Spencer Mulligan
as Gregor's Handler (1 episode)
Timothy Busfield
as Therapist Simmons (1 episode)
Peter Gerety
as Secretary McCullough (1 episode)
Andy Watts
as Manticore Agent #2 (1 episode)
Ilan Muallem
as Manticore Agent #1 (1 episode)
Gary Weeks
as Manticore Agent #3 (1 episode)
Erin Boswell
as Marjorie (BBC Reporter) (1 episode)
Kineta Kunutu
as Billie (2 episodes)
Ivo Nandi
as Vincenzo (1 episode)
Alison Halstead
as Pearline (1 episode)
Ethan Moorhouse
as Security Guard (1 episode)
Leo Ashizawa
as Yamazaki (2 episodes)
Xavilaine Hinecapie
as Restaurant Hostess (1 episode)
Nikki Amuka-Bird
as Grace Helgoff (3 episodes)
Leo Woodall
as Duke (2 episodes)
Gráinne Good
as Valeria (3 episodes)
Pedro Leandro
as Christiano (1 episode)
Mo Chara
as Lars (1 episode)
Mike Capozzola
as Doctor (1 episode)
Paul Bazely
as Rahi Gambhir (1 episode)
Sara Martins
as Sandra (3 episodes)
Simon Kim
as Agent Park (1 episode)
Silvia Torregrosa
as Midwife (1 episode)
Laëtitia Eïdo
as Cristoph (2 episodes)
Audie Rick
as Young Mason (1 episode)
Deborah Hedwall
as Mason's Grandmother (1 episode)
Serafina Tarafdar
as Asha (1 episode)
Simon Kim
as Agent Park (1 episode)
Ilan Muallem
as Manticore Agent #1 (1 episode)
For the best insights and data about the TV show Citadel, visit our main Citadel page.