 | Matthias Schoenaerts als Mikhail Averin |
 | Léa Seydoux als Tanya Averina |
 | Peter Simonischek als Admiral Vyacheslav Grudzinsky |
 | Max von Sydow als Admiral Vladimir Petrenko |
 | August Diehl als Anton Markov |
 | Colin Firth als Commodore David Russell |
 | Bjarne Henriksen als Russian Rescue Ship Captain |
 | Magnus Millang als Oleg Lebedev |
 | Artemiy Spiridonov als Misha Averin |
 | Joel Basman als Leo |
 | Pit Bukowski als Maxim |
 | Matthias Schweighöfer als Pavel Sonin |
 | Tom Hudson als Roman |
| Chris Pascal als Niko |
 | Kristof Coenen als Sasha |
 | Pernilla August als Oksana |
 | Helene Reingaard Neumann als Vera |
 | Martin Brambach als Kursk Captain Gennady Shirokov |
 | Peter Plaugborg als Kursk Executive Officer Alexander Grekov |
 | Guillaume Kerbusch als Torpedo's Room Midshipman Alexi Zhukov |
 | Koen De Sutter als Admiral Ivakin (Peter the Great) |
 | Gustaf Hammarsten als Lesser Admiral Mikhail Denisov (Peter the Great) |
 | Aske Bang als Lt. Pulsky (Peter the Great) |
 | Lars Brygmann als Priz Pilot Kasyenenko |
 | Martin Greis-Rosenthal als Priz Pilot Ilyushin |
 | Steven Waddington als Graham Mann (Seaway Eagle) |
 | John Hollingworth als Lt. Bruce Hamil |
 | Katrine Greis-Rosenthal als Daria Sonin |
 | Josse De Pauw als Vadim Markov, Anton's Father |
 | Feđa Štukan als Warehouse Worker Goncharov |
| Jehon Gorani als Warehouse Worker Oblomov |
 | Miglen Mirtchev als Russian Captain Ivan Timoshenko |
| Mark Irons als Russian Head of the SVR Vladimir Laskutin |
 | Zlatko Burić als Kulkin, Veteran Swimmer on Rudnitsky |
 | Eva van der Gucht als Marina Lebedev |
 | Geoffrey Newland als Rescue Team Diver Tony Scott |
 | Michael Nyqvist als Nesterov |
| Danny van Meenen als Rescue Team Diver Paal Dinessen |
 | Guido De Craene als Captain Calpin (Peter the Great) |
 | Marjan De Schutter als Anastasia Dudko |
| Gabriela Cotet als Wife Daycare #1 |
 | Olga Markina als Wife Daycare #2 |
| David Russell als Old Sailor New |
| Luc Besson | Executive Producer |
| Anthony Dod Mantle | Director of Photography |
| Valdís Óskarsdóttir | Editor |
| Alexandre Desplat | Original Music Composer |
| Thomas Vinterberg | Director |
| Robert Rodat | Screenplay |
| Lisa Ellzey | Executive Producer |
| Nicolas Becker | Sound Designer |
| Ariel Zeitoun | Producer |
| Jean-Paul Hurier | Sound Re-Recording Mixer |
| Thierry Flamand | Production Design |
| Catherine Marchand | Costume Design |
| Seppe van Groeningen | Boom Operator |
| Jo Vermaercke | Camera Operator |
| Jo Vermaercke | Steadicam Operator |
| Suzanne Martin | Crowd Assistant Director |
| Pascal Berger | Special Effects Makeup Artist |
| Gigi Akoka | Casting |
| Toby Whale | Casting Director |
| Claude Léger | Executive Producer |
| Jan Deca | Production Sound Mixer |
| Olivier Glaas | Line Producer |
| Nathalie De Hen | Makeup Artist |
| Lieven Baes | Set Decoration |
| Clémence Stoloff | Assistant Sound Editor |
| Dries De Paepe | Electrician |
| Maxim Honoré | Lighting Technician |
| Pascalle Willame | Set Decoration |
| Sigurður Eyþórsson | Co-Editor |
| Martin Doepner | Second Unit First Assistant Director |
| Dimitri Doulkeridis | Key Grip |
| Dimitri Doulkeridis | Key Rigging Grip |
| Ray Wu | Executive Producer |
| Virginie Berland | Facial Setup Artist |
| Anne Moralis | Key Hair Stylist |
| Anne Moralis | Key Makeup Artist |
| Guillaume Bouchateau | Supervising Sound Editor |
| Katia Boutin | ADR Supervisor |
| Philippe Penot | Foley Artist |
| Johann Nallet | Sound Re-Recording Mixer |
| Johann Nallet | ADR Mixer |
| Bridget O'Driscoll | Supervising Dialogue Editor |
| Clément Sentilhes | Line Producer |
| Loïc Gourbe | Foley Mixer |
| Hervé Jakubowicz | Casting |
| Pol Stinders | Lighting Technician |
| Christine Giugno | Makeup Artist |
| Patrick Otten | Second Unit Director of Photography |
| Patrick Otten | Second Unit Director |
| Sinan Saber | First Assistant Director |
| Géraldine Lemaire | Hairstylist |
| Esteban Sanchez | Second Unit First Assistant Director |
| Aaron Keating | Chief Lighting Technician |
| Raphaël Benoliel | Executive Producer |
| Evie Hamels | Makeup & Hair |
| Pierre Picq | Boom Operator |
| Audrey Thiery | Production Accountant |
| Mustapha Souaidi | Casting |
| Jean-Christophe Bourgeois | Special Effects Technician |
| Steven Soete | Electrician |
| Jérémy Babinet | Foley Editor |
| Florian Penot | Assistant Foley Artist |
| Enguerrand Gicquel | Electrician |
| Fabienne Adam | Makeup Artist |
| Fabienne Adam | Special Effects Makeup Artist |
| Angèle Laroche | Electrician |
| Dominique Degand | Grip |
| Korneel Moeyaert | Electrician |
| Marine Père | Assistant Editor |
| Cinediving Wim Michiels | Underwater Camera |
| Sarbu Gigi | Grip |
| Sarah Roman | Special Effects Makeup Artist |
| Wouter Dewilde | First Assistant "B" Camera |
| Dries Leerschool | Key Grip |
| Wim Temmerman | Gaffer |
| Gideon van Essen | Gaffer |
| Mika Cotellon | Still Photographer |
| Fabrice Delville | Producer |
| Alain-Gilles Viellevoye | Finance |
| Koen Martens | Lighting Technician |
| Christophe Toulemonde | Producer |
| Joris Vandezande | Grip |
| Jamie Drossaert | Lighting Technician |
| Virginie Hernvann | Supervising Art Director |
| Robert Moore | Book |
| Jérôme de Béthune | Producer |
| Patrick Vandenbosch | Producer |
| Thomas Delord | Assistant Art Director |
| Gladys Garot | Art Direction |
| C. Thomas Paschall | Executive Producer |
| Vince Van Driesten | Sound Recordist |
| Laurent Hanon | Line Producer |
| Lucien Richardson | ADR Editor |
| Elodie Ly Tri | Online Editor |
| Margot Saada | ADR Editor |
| Bruno Amestoy | Line Producer |
| Roxanne Gaucherand | Assistant Director Trainee |
| Fanny Fallourd | Makeup Artist |
| Constance D'Humières | Executive Producer |
| Arnaud De Senilhes | Executive Producer |
| Jean-Marc Debaty | Executive Producer |
| Vincent Decalf | Executive Producer |
| Kathian Pascal | Line Producer |
| Oana Prata | Line Producer |
| Mathieu Rubin | Line Producer |
| Thomas Schouppe Topa | Set Designer |
| Daphnee Beaulieux | Special Effects Makeup Artist |
| Michelle Beeckman | Key Makeup Artist |
| Michelle Beeckman | First Assistant Makeup Artist |
| Ludovic Constant | Hairstylist |
| Lili Dang-Vu | Assistant Hairstylist |
| Lili Dang-Vu | Assistant Makeup Artist |
| Natascha Matheuwezen | Assistant Hairstylist |
| Natascha Matheuwezen | Assistant Makeup Artist |
| Marie Messien | Makeup Artist |
| Brigitte Petit | Hairstylist |
| Vincent Respriget | Hairdresser |
| Erwan Simon | Special Effects Makeup Artist |
| Robert Smedt | Hairstylist |
| Patricia Grant | Special Effects Makeup Artist |
| Marianne Campos | Production Secretary |
| Navarra Claudia | Production Assistant |
| Lisa Perousse | Assistant Unit Manager |
| Nora Thomas | Assistant Production Manager |
| Philippe Vaïsse | Assistant Unit Manager |
| Liliane Wang | Production Accountant |
| Candice Bibauw | Assistant Director |
| Sophie Depraetere | Third Assistant Director |
| Philippe Desiront | Second Unit Director |
| Nancy Ferri | Assistant Director |
| Carlota González-Hontoria Lefèvre | Second Assistant Director |
| Matthias Morard | Second Assistant Director |
| Roxana Raducanu | Third Assistant Director |
| Pierre Truong Tan Trung | Assistant Director |
| Jeroen Heymans | Sound Assistant |
| Olga Pasternak | Sound Assistant |
| Charlie Cantraine | Special Effects |
| Simon Malcom Cokes | Special Effects Assistant |
| Maurice Grégoire | Special Effects |
| Chloè Acher | Digital Imaging Technician |
| Renaud Charlier | Additional Grip |
| Julien Covens | Grip |
| Tinus Dam | Lighting Technician |
| Jean Christophe Delinaoumis | Rigging Grip |
| Réginald Desy | Grip |
| Luc Frisson | First Assistant "A" Camera |
| Nicolas Lemoine | Grip |
| Jimmy Wolf Nguyen | Assistant Camera |
| Veerle Pipeleers | Best Boy Grip |
| Maarten Stoop | Electrician |
| Bertrand Trividic | Electrician |
| Ruby Van der Kooij | Phantom Operator |
| Ruby Van der Kooij | Second Assistant "B" Camera |
| Thomas Vernimmen | Assistant Camera |
| Kevin Vidal | Assistant Camera |
| Mickaël Vigot | Electrician |
| Denis Warnier | Rigging Grip |
| Isabelle Bassaglia | Assistant Editor |
| Melodie Stevens | Post Production Supervisor |
| Pieter-Jan Uvyn | Dailies Manager |
