Julián, a divorced man with financial problems, uses a cell phone application to share his car with strangers.
Is Four's a Crowd on Netflix? Yes! The movie Four's a Crowd is now on Netflix in the countries listed below.
| Camera | Rita Noriega | Director of Photography |
| Sound | Roque Baños | Original Music Composer |
| Writing | Álex de la Iglesia | Screenplay |
| Writing | Jorge Guerricaechevarría | Screenplay |
| Production | Álex de la Iglesia | Producer |
| Production | Ghislain Barrois | Producer |
| Production | Álvaro Augustín | Producer |
| Production | Carolina Bang | Executive Producer |
| Production | Mercedes Barbod | Executive Producer |
| Production | Jorge Tuca | Delegated Producer |
| Production | Mónica Iturriaga | Delegated Producer |
| Directing | Álex de la Iglesia | Director |
| Production | Carolina Bang | Producer |
| Directing | Paco Bermúdez | First Assistant Director |
| Directing | Cristina Liberos | Second Assistant Director |
| Directing | Jorge Santana | Third Assistant Director |
| Directing | Patricia Vila | Script Supervisor |
| Production | Carmen Utrilla | Casting Director |
| Production | Margarita Rodríguez | Casting Director |
| Production | Carlos Baeza | Production Manager |
| Camera | Raúl García | "A" Camera Operator |
| Camera | Fernando Navarro | Steadicam Operator |
| Camera | Gabi García | First Assistant "A" Camera |
| Camera | Eva Aycart | First Assistant "B" Camera |
| Camera | Tomás Martín García | Second Assistant "A" Camera |
| Camera | Alberto Bang | Second Assistant "B" Camera |
| Camera | Xavi Pastor Heredia | Digital Imaging Technician |
| Camera | Alberto Rafols | Drone Cinematographer |
| Camera | Juan Rafols | Drone Cinematographer |
| Camera | Laura Cabero | Camera Intern |
| Art | José Luis Arrizabalaga | Production Design |
| Art | Biaffra | Production Design |
| Art | Ana Palazón | Art Direction |
| Art | Enrique Gómez | Property Master |
| Art | Julián Estében Celeiro | Assistant Set Decoration |
| Art | Irati Musitu | Assistant Set Decoration |
| Art | Álvaro Lahoz | Art Department Assistant |
| Art | Jose Moro | Art Department Assistant |
| Art | Salí Palomeras | Additional Set Dresser |
| Art | Curro Chacón | Set Dresser |
| Art | Jesús Ortiz Fernández | Set Dresser |
| Art | Antonio Delgado | Construction Foreman |
| Art | Alba Odeh | Painter |
| Art | Mónica Porro Domenech | Painter |
| Art | Javier Le Pera | Set Designer |
| Costume & Make-Up | Rebeca Durán Estrada | Costume Design |
| Costume & Make-Up | Jose Carlos Gomez | Assistant Costume Designer |
| Sound | Mar González | Sound Supervisor |
| Sound | Daniel González Serrano | Boom Operator |
| Sound | Javier Pérez García | Boom Operator |
| Costume & Make-Up | Sonia de la Fuente | Makeup Department Head |
| Costume & Make-Up | Pilar Camacho Paulino | Hair Department Head |
| Lighting | Peru Herrero | Gaffer |
| Lighting | Kiko Boyero | Gaffer |
| Lighting | Ruder Miranda Rojas | Best Boy Electric |
| Camera | Roberto Miguel | Key Grip |
| Camera | Alfredo Díaz Viña | Key Grip |
| Crew | Ignacio Carreño | Stunt Coordinator |
| Crew | Jesús Ordóñez Carvajal | Stunts |
| Crew | Araceli Carrilero | Stunts |
| Crew | Juan Luis Fraile Zamora | Stunts |
| Crew | Javier Balbacid | Stunts |
| Crew | Diego Herberg | Stunts |
| Crew | Héctor Vaquero | Stunts |
| Crew | Mar Morilla Ju | Stunts |
| Crew | Miguel Hernández | Stunts |
| Crew | Efraín Esteban Suárez | Stunts |
| Crew | Judith Vázquez | Stunts |
| Crew | Luis Rosel | Stunts |
| Crew | Arturo De La Torre | Stunts |
| Visual Effects | Ignacio Miguel Montilla | Special Effects Supervisor |
| Visual Effects | Juan Antonio Gómez | Special Effects Supervisor |
| Crew | David San Román | Special Effects Technician |
| Camera | Diego López Calvin | Still Photographer |
| Directing | Alberto Morago | Second Unit First Assistant Director |
| Sound | Ginés Carrión | Music Arranger |
| Sound | David Hernando Rico | Conductor |
| Production | Gusa Alonso-Pimentel | Post Production Coordinator |
| Editing | Domingo González | Editor |
| Editing | Óscar Redondo | Assistant Editor |
| Sound | Candela Palencia | Sound Re-Recording Mixer |
| Art | David Guaita | Title Designer |
| Art | Luis Ballesteros García | Title Designer |
| Editing | Mauro Maroto | Colorist |
| Sound | Maria Rassokhina | Foley Recording Engineer |
| Sound | Sofía Alibaeva | Foley Recordist |
| Visual Effects | Gusa Alonso-Pimentel | VFX Supervisor |
