- Johnny Flynn - Felix Tholomyès
- Derek Jacobi - Bishop Myriel
- Matthew Steer - Blachevelle
- Reece Ritchie - Fameuil
- Ayoola Smart - Zéphine
- Liz Carr - Fantine's Concierge
- Ashley Artus - Gendarme
- Hayley Carmichael - Madame Magliore
- Ann Firbank - Old Lady
- Henry Lawfull - Petit Gervais
- Henry Lloyd-Hughes - Col. Pontmercy
- Kathryn Hunter - Madame Victurnien
- Lily Newmark - Sophie
- Erin Doherty - Fabienne
- James Garnon - Bamatabois
- Sean Cernow - Phillipe
- Donald Sumpter - Mabeuf
- Emma Fielding - Nicolette
- Enzo Cilenti - Rivette
- Turlough Convery - Grantaire
- Archie Madekwe - Courfeyrac
- Natalie Simpson - Sister Simplice
- Ron Cook - Hair and Teeth Dealer
- Angela Wynter - Toussaint
- Patricia Allison - Marguerite
- Georgie Glen - Abbess
- Anna Andresen - Daphne
- Andrew Paul - Innkeeper
- Chris Brooker - Sergeant
- Alan David - Letter Writer
- Woody Norman - Young Marius
- Meabh Maguire - Sceptical Woman
- Francis Chapman - Usher
- Nigel Cooke - Judge
- Anton Saunders - Champmathieu
- Oengus MacNamara - Brevet
- Darren Kent - Chenildieu
- Abraham Popoola - Cochepaille
- Lawrence Sheldon - Inn Customer
- Lorcan Cranitch - Prefect of Police
- Lorcan Cranitch - Chief Inspector
- Jan Debski - Inn Pedlar
- Tiarna Williams - Young Éponine
- Jean-Louis Sbille - Gorbeau Beggar
- Jonathan Sawdon - Head Bailiff
- Tsion Habte - Germaine
- Isis Hainsworth - Marie Claire
- Anna Calder-Marshall - Madame Rully
- Caroline Donnelly - Dressmaker
- Judith Williquet - Faux-Cosette
- Alex Jarrett - Azelma
- Julie Maes - Prison Wardress
- Josef Altin - Claquesous
- Jumayn Hunter - Montparnasse
- Tim Myers - Royalist
- Gilles Vandeweerd - Army Officer
- Ellie Bamber - Cosette
- Josh O'Connor - Marius
- Joseph Quinn - Enjolras
- Daniel Tuite - Despiat
- Mwanza Goutier - Daniel
- Leah Harvey - Matelote
- Victor Gardener - Army Officer
- Olivia Colman - Madame Thénardier
- Tommy Finnegan - Older Boy
- Lily Collins - Fantine
- David Bradley - Gillenormand
- Elizabeth Alexandris
- Nina Kerremans
- Simon Hedges
- Pierre Truong Tan Trung
- Victor Hugo
- Agnes Meath Baker
- Louise Mutter
- Sarah Irvine
- Bethan Jones
- Robert Sterne
- Mona Qureshi
- Didier Lechien
- Luc Cuvelee
- Nigel Edwards
- Rodney Berling
- Jussi Honka
- Nick Baldock
- Kallis Shamaris
Dominic West interpreta a Jean Valjean en la serie.
Derek Jacobi hace el papel de Bishop Myriel.
David Oyelowo interpreta a Javert en la serie.
Adeel Akhtar hace el papel de Thénardier.
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