Will is 38 maar gedraagt zich als een tiener. Hij is single, heeft geen kinderen en is nog steeds cool: hij rijdt in een snelle auto, gaat naar trendy clubs en weet welke sportschoenen je hoort te dragen. Hij heeft ook een perfecte manier gevonden om vrouwen te ontmoeten: hij gaat naar bijeenkomsten van alleenstaande ouders, waar veel vrouwen komen die een nieuwe leuke man zoeken, en doet alsof hij zelf ook een kind heeft. Via zo'n bijeenkomst ontmoet hij Marcus, de oudste twaalfjarige jongen ter wereld. Marcus is een beetje vreemd: hij luistert graag naar Joni Mitchell en Mozart, hij zorgt voor zijn moeder en hij heeft zelfs nog nooit sportschoenen gedragen. Langzaam ontstaat er een bijzondere vriendschap tussen de twee.
Nee, helaas is About a Boy nog niet beschikbaar op Netflix in Nederland.
| Writing | Peter Hedges | Screenplay |
| Production | Brad Epstein | Producer |
| Directing | Paul Weitz | Director |
| Production | Tim Bevan | Producer |
| Writing | Chris Weitz | Screenplay |
| Camera | Remi Adefarasin | Director of Photography |
| Sound | Badly Drawn Boy | Original Music Composer |
| Art | Jim Clay | Production Design |
| Writing | Nick Hornby | Screenplay |
| Production | Priscilla John | Casting |
| Writing | Nick Hornby | Novel |
| Production | Robert De Niro | Producer |
| Editing | Nick Moore | Editor |
| Directing | Chris Weitz | Director |
| Writing | Paul Weitz | Screenplay |
| Production | Eric Fellner | Producer |
| Production | Jane Rosenthal | Producer |
| Art | Bill Hargreaves | Props |
| Production | Lynn Harris | Executive Producer |
| Camera | Peter Robertson | "A" Camera Operator |
| Production | Neil Chaplin | Production Accountant |
| Crew | Graham Stumpf | Post Production Supervisor |
| Costume & Make-Up | Graham Johnston | Hair Designer |
| Production | Bernard Bellew | Production Manager |
| Art | Rod McLean | Supervising Art Director |
| Sound | Nick Angel | Music Supervisor |
| Production | Debra Hayward | Co-Producer |
| Production | Hardy Justice | Co-Producer |
| Sound | Tony Dawe | Sound Mixer |
| Production | Ann Lynch | Production Coordinator |
| Directing | Alex Oakley | Third Assistant Director |
| Sound | Jaya Bishop | Boom Operator |
| Directing | Nikki Clapp | Script Supervisor |
| Camera | John Arnold | Key Grip |
| Camera | René Adefarasin | Camera Loader |
| Costume & Make-Up | Graham Johnston | Makeup Designer |
| Production | Liza Chasin | Co-Producer |
| Camera | Peter Robertson | Steadicam Operator |
| Production | Nick Hornby | Executive Producer |
| Production | Nicky Kentish Barnes | Co-Producer |
| Directing | Christopher Newman | First Assistant Director |
| Directing | Ben Howarth | Second Assistant Director |
| Production | Tarn Harper | Post Production Accountant |
| Sound | Chris Carpenter | Sound Re-Recording Mixer |
| Sound | Gary S. Gerlich | Sound Editor |
| Production | Meghan Lyvers | Producer's Assistant |
| Sound | Lee Gilmore | Apprentice Sound Editor |
| Costume & Make-Up | Martin Chitty | Costume Assistant |
| Art | Gary Freeman | Art Direction |
| Crew | Jill McCullough | Dialogue Coach |
| Production | Steve Hart | Location Manager |
| Sound | William Hooper | Sound Editor |
| Crew | Peter Duffy | Carpenter |
| Production | Lucy Williams | Unit Manager |
| Production | Laura Dickens | Casting Assistant |
| Sound | Walter Spencer | Dialogue Editor |
| Sound | Charles Martin Inouye | Supervising Music Editor |
| Editing | Simon Cozens | First Assistant Editor |
| Sound | Norval D. Crutcher III | ADR Editor |
| Sound | Andy Koyama | Sound Re-Recording Mixer |
| Crew | Darryl Carter | Carpenter |
| Art | David Williamson | Standby Carpenter |
| Sound | Samuel Webb | Assistant Sound Editor |
| Costume & Make-Up | Louise Egan | Costume Assistant |
| Costume & Make-Up | Claire Finlay-Thompson | Costume Supervisor |
| Art | Barry Gibbs | Property Master |
| Sound | Patrick O'Sullivan | Sound Editor |
| Costume & Make-Up | Lorna McGowan | Makeup Artist |
| Art | John Bush | Set Decoration |
| Costume & Make-Up | Carmel Jackson | Makeup Artist |
| Costume & Make-Up | Helen Mattocks | Key Set Costumer |
| Art | Jeff Sullivan | Painter |
| Crew | Sara Woodhatch | Actor's Assistant |
| Art | Paul Duff | Standby Carpenter |
| Lighting | Dave Moss | Electrician |
| Crew | Stacy Mann | Unit Publicist |
| Crew | Joseph Alley | Carpenter |
| Lighting | Jamie Mills | Electrician |
| Sound | Bill Meadows | Sound Recordist |
| Production | Vanessa Baker | ADR Voice Casting |
| Sound | Bob McNabb | ADR Supervisor |
| Art | Rosie Hardwick | Assistant Art Director |
| Editing | Theresa Repola Mohammed | Negative Cutter |
| Sound | Bryan Pennington | Dolby Consultant |
| Camera | Laurie Sparham | Still Photographer |
| Sound | Stephen McLaughlin | Scoring Mixer |
| Production | Brendan Donnison | ADR Voice Casting |
| Sound | Ted Swanscott | ADR Mixer |
| Crew | Grahame Crowther | Stunt Coordinator |
| Sound | Colin Cooper | ADR Recordist |
| Editing | Jim Passon | Color Timer |
| Sound | Richard LeGrand Jr. | Supervising Sound Editor |
| Costume & Make-Up | Guy Speranza | Assistant Costume Designer |
| Sound | Marilyn Graf | Foley Editor |
| Crew | Nick Goodall | Carpenter |
| Costume & Make-Up | Joanna Johnston | Costume Design |
