Eight years after fleeing the Congo following his assassination of that country's minister of mining, former assassin Jim Terrier is back, suffering from PTSD and digging wells to atone for his violent past. After an attempt is made on his life, Terrier flies to London to find out who wants him dead -- and why. Terrier's search leads him to a reunion with Annie, a woman he once loved, who is now married to an oily businessman with dealings in Africa.
Unfortunately the movie The Gunman is not yet available on HBO Max.
| Crew | Leopold Hughes | Post Production Assistant |
| Crew | Antonio Arnalte | Stunt Double |
| Crew | Levan Doran | Stunt Double |
| Crew | Zarene Dallas | Stunt Double |
| Directing | Pierre Morel | Director |
| Writing | Don MacPherson | Screenplay |
| Writing | Sean Penn | Screenplay |
| Writing | Jean-Patrick Manchette | Novel |
| Writing | Pete Travis | Screenplay |
| Directing | Morag Cameron | Script Supervisor |
| Costume & Make-Up | Inge Hough | Set Costumer |
| Art | Gemma Fauria | Art Direction |
| Art | Anneke Botha | Set Decoration |
| Costume & Make-Up | Paul Job | Hairstylist |
| Art | Joan Sabaté | Art Department Coordinator |
| Art | Marina Pozanco | Art Direction |
| Costume & Make-Up | Francesca Van Der Feyst | Makeup Artist |
| Costume & Make-Up | Jill Taylor | Costume Design |
| Costume & Make-Up | Cristina Sopeña | Costume Supervisor |
| Costume & Make-Up | Ana Lozano | Makeup Artist |
| Art | Sylvia Steinbrecht | Art Direction |
| Costume & Make-Up | Bret Mayo | Hairstylist |
| Costume & Make-Up | Anna Izquierdo | Set Costumer |
| Production | Olivier Courson | Executive Producer |
| Production | Andrew Rona | Producer |
| Production | Peter McAleese | Executive Producer |
| Production | Adrián Guerra | Executive Producer |
| Production | Reg Poerscout-Edgerton | Casting |
| Production | Steve Richard | Executive Producer |
| Editing | Frédéric Thoraval | Editor |
| Production | Sean Penn | Producer |
| Production | Aaron Auch | Executive Producer |
| Sound | Marco Beltrami | Original Music Composer |
| Camera | Flavio Martínez Labiano | Director of Photography |
| Production | Alex Heineman | Co-Producer |
| Art | Andrew Laws | Production Design |
| Production | Ron Halpern | Producer |
| Production | Stephen Bender | Associate Producer |
| Production | Sally French | Line Producer |
| Production | Adam Kuhn | Co-Producer |
| Art | Stuart Kearns | Supervising Art Director |
| Production | Ethan Erwin | Associate Producer |
| Production | Carmel Musgrove | Associate Producer |
| Production | Ray Kybartas | Co-Producer |
| Sound | Colin Nicolson | Production Sound Mixer |
| Costume & Make-Up | Caitlin Acheson | Makeup Artist |
| Visual Effects | Mehul Jhaveri | Visual Effects Coordinator |
| Visual Effects | Vinay Karunakar | Visual Effects Coordinator |
| Camera | Álvaro Fernández Puig | First Assistant Camera |
| Costume & Make-Up | Eva Salas | Key Costumer |
| Sound | Matt Dunkley | Orchestrator |
| Sound | Michael Maroussas | Supervising Dialogue Editor |
| Crew | Andy Hague | Visual Effects Editor |
| Camera | Keith Bernstein | Still Photographer |
| Directing | Raymond Kirk | First Assistant Director |
| Visual Effects | Pau Costa | Special Effects Supervisor |
| Visual Effects | Shreyas Dorwat | Visual Effects Coordinator |
| Crew | Jordi Casares | Stunt Coordinator |
| Art | Christophe Dalberg | Art Direction |
| Art | Dave Fisher | Property Master |
| Crew | Markos Rounthwaite | Fight Choreographer |
| Production | Tim Maw | Location Manager |
| Sound | Jorge Adrados | Boom Operator |
| Sound | Davide Favargiotti | Dialogue Editor |
| Editing | Emanuele Giraldo | First Assistant Editor |
| Sound | Frédéric Dubois | Sound Editor |
| Visual Effects | Justi Romero | Modeling |
| Camera | Jordi Florensa | First Assistant Camera |
| Costume & Make-Up | Graham Johnston | Makeup Designer |
| Costume & Make-Up | Graham Johnston | Hair Designer |
| Art | Héctor Gil | Property Master |
| Sound | Paul Carter | Sound Designer |
| Sound | Rob Prynne | Sound Effects Designer |
| Visual Effects | Stuart Lashley | Visual Effects Supervisor |
| Visual Effects | Rachel Wheeler | Visual Effects Producer |
| Crew | Steve McQuillan | Fight Choreographer |
| Sound | John Warhurst | Music Editor |
| Art | Florian Müller | Set Designer |
| Sound | Biel Cabré | Sound Recordist |
| Camera | Salva Castellarnau | Key Grip |
| Crew | Marc Wolff | Pilot |
| Costume & Make-Up | Nuria Pascual-Andújar | Costume Coordinator |
| Editing | Andrew Walton | First Assistant Editor |
| Crew | Glenn Foster | Stunt Coordinator |
| Visual Effects | Kevin Sheldon Saldanha | Visual Effects Coordinator |
| Visual Effects | Mohak Sharma | Visual Effects Coordinator |
| Visual Effects | Jon Thum | Visual Effects Supervisor |
| Camera | Joe Alblas | Still Photographer |
| Camera | Adam Dale | Aerial Director of Photography |
| Camera | Imanol Nabea | First Assistant Camera |
| Sound | Hugo Adams | Foley Editor |
| Visual Effects | Devika Kawle | Visual Effects Coordinator |
| Camera | Javier González Leonardo | Key Grip |
| Sound | Bastide Donny | Music Supervisor |
| Costume & Make-Up | Vivienne Simpson | Makeup Artist |
| Lighting | José Luis Rodríguez | Gaffer |
| Production | Asia Jarzyna | Production Coordinator |
| Art | Nic Benns | Title Designer |
| Crew | William Conacher | Dialect Coach |
| Production | Marta del Río | Production Coordinator |
| Crew | Adam Goodall | Armorer |
| Crew | Nick Jeffries | Armorer |
| Costume & Make-Up | Manolo García | Hairstylist |
| Costume & Make-Up | Nathaniel De'Lineadeus | Special Effects Makeup Artist |
| Costume & Make-Up | Chris Lyons | Special Effects Makeup Artist |
| Sound | Andrea King | Foley Artist |
| Sound | Jack Stew | Foley Artist |
| Sound | Peter Gleaves | ADR Mixer |
