- Santiago Cabrera
- Â Octavius 6 episodes, 2005
- Vincent Regan
- Â Marc Antony 6 episodes, 2005
- Emily Blunt
- Â Camane 6 episodes, 2005
- James Frain
- Â Brutus 6 episodes, 2005
- Jonathan Cake
- Â Tyrannus 6 episodes, 2005
- Graham McTavish
- Â General Rapax 4 episodes, 2005
- Clive Riche
- Â Herteus 3 episodes, 2005
- Roger Ashton-Griffiths
- Â Panza 3 episodes, 2005
- Alan David
- Â Quinitilius 2 episodes, 2005
- Christopher Egan
- Â Agrippa 3 episodes, 2005
- Michael Maloney
- Â Cassius 3 episodes, 2005
- Fiona Shaw
- Â Fulvia 3 episodes, 2005
- Michael Byrne
- Â Cicero 3 episodes, 2005
- Trudie Styler
- Â Servilia 3 episodes, 2005
- Amanda Root
- Â Noella 3 episodes, 2005
- Ian Bartholomew
- Â Cimber 3 episodes, 2005
- Michael Culkin
- Â Lucius 2 episodes, 2005
- Sylvia De Fanti
- Â Moira 2 episodes, 2005
- Fillipo Reda
- Â Piso 2 episodes, 2005
- Caroline Ashley
- Â Titiana 2 episodes, 2005
- Julian Firth
- Â Publius Claudius 1 episode, 2005
- Inday Ba
- Â Nila 1 episode, 2005
- Amelia Curtis
- Â Wife of Publius Claudius 1 episode, 2005
- Stephanie Leonidas
- Â Girlfriend 3 episodes, 2005
- Terence Maynard
- Â Atticus 1 episode, 2005
- Martin Marquez
- Â General Crito 1 episode, 2005
- Joe Hanley
- Â Lagos 1 episode, 2005
- Edoardo Trowse
- Â Rough Youth 1 episode, 2005
- Jean-Marie Paris
- Â The Reterian 1 episode, 2005
- Angel Turner
- Â Gordiana 1 episode, 2005
- Jonis Bashir
- Â Drax 1 episode, 2005
- Orla Brady
- Â Atia 2 episodes, 2005
- Ed Stoppard
- Â Sebastianus 1 episode, 2005
- Felix Dexter
- Â Maximus 1 episode, 2005
- Ian Redford
- Â Nobleman Marius 1 episode, 2005
- Michael Jenn
- Â Saturnicus 1 episode, 2005
- Robert Willox
- Â Balthus 1 episode, 2005
- Stephen Graham
- Â Bazzer 2 episodes, 2005
- Giannina Salvetti
- Â Market Seller 1 episode, 2005
- Anthony Souter
- Â Slave Trader 1 episode, 2005
- Luca Venantini
- Â Fortunus 1 episode, 2005
- Colm Feore
- Â Caesar 1 episode, 2005
- Dennis Haysbert
- Â Magonius 1 episode, 2005
- Daniela Massetti
- Â Lily 1 episode, 2005
- Cosetta Turco
- Â Dancer 1 episode, 2005
- Bart Ruspoli
- Â Principe (uncredited) 2 episodes, 2005
- Jay Natelle
- Â Soldier (uncredited) 2 episodes, 2005
- Giacomo Gonnella
- Â Bestiari (uncredited) 2 episodes, 2005
- Ian Ruskin
- Â Voice Actor (uncredited) 2 episodes, 2005
- Mario Opinato
- Â Sergeant at Arms (uncredited) 2 episodes, 2005
- Antonio Del Prete
- Â Slave (uncredited) 2 episodes, 2005
- Diz White
- Â Voice Replacement (uncredited) 2 episodes, 2005
- Joseph Murray
- Â Davus (uncredited) 2 episodes, 2005
- Massimiliano Ubaldi
- Â Centurion (uncredited) 2 episodes, 2005
- Francis Pardeilhan
- Â The General (uncredited) 2 episodes, 2005
- Alessandro Dieli
- Â Caelus (uncredited) 2 episodes, 2005
- Anna Sarnholm
- Â Larissa (uncredited) 2 episodes, 2005
- Bruno Bilotta
- Â Appius (uncredited) 1 episode, 2005
- Ted Rusoff
- Â Peasant Farmer (uncredited) 1 episode, 2005
- Al Mariotti
- Â Captain of the Lost Legion (uncredited) 1 episode, 2005
- Alexander Brooks
- Â Pawnbroker (uncredited) 1 episode, 2005
- Naomi West
- Â Elena (uncredited) 1 episode, 2005
- Gianfranco Russo
- Â Legion Scout (uncredited) 1 episode, 2005