Trailer
 | Russell Brand as Arthur |
 | Helen Mirren as Hobson |
 | Greta Gerwig as Naomi Quinn |
 | Jennifer Garner as Susan Johnson |
 | Geraldine James as Vivienne |
 | Luis Guzmán as Bitterman |
 | Nick Nolte as Burt Johnson |
 | Peter Van Wagner as Naomi's Dad |
 | Christina Jacquelyn Calph as Tiffany |
 | John Hodgman as Peter, Candy Store Manager |
 | Murphy Guyer as Officer Kaplan |
 | Saul Stein as Officer #2 |
 | José Ramón Rosario as Employment Clerk |
| John Hodgman as Candy Store Manager |
 | Scott Adsit as Gummy Bear Man |
 | Evander Holyfield as Boxing Trainer |
 | Robert Clohessy as Veteran Cop |
 | Ed Herbstman as Rookie Cop |
 | Jared Parker as Wedding Kid |
 | Tom Toner as Wedding Priest |
 | Richard Bekins as Chancellor |
 | Matt Malloy as Spoon Guy |
 | Nigel Barker as Photographer |
 | Tuffy Questell as Tito |
 | Sara Chase as Journalist #1 |
 | Ali Reza as Journalist #2 |
 | Brian McElhaney as College Student |
 | Charlie Hewson as Receptionist / Best Man |
 | Peter Brouwer as Auctioneer |
 | Stink Fisher as Foreman |
| Debbie Lee Jones as Kissed Woman |
 | Pascal Yen-Pfister as Maitre D' |
 | Dylan Clark Marshall as Boy on Tour |
 | Steve Rosen as Grand Central Waiter |
 | Leslie Hendrix as Alice Johnson |
| George Feaster as James |
| Ed Jewett as Group Leader |
 | John Carrafa as Choreographer |
| Jennie Eisenhower as Maid of Honor |
 | Sean Tarjyoto as Bookstore Clerk |
 | Pamela Stewart as Librarian |
 | Skai Jackson as Library Girl #1 |
 | Tori Feinstein as Library Girl #2 |
 | Jackson Nicoll as Library Boy #1 |
 | Devin Almonte as Susan's Bridesmaid (uncredited) |
 | Jamie Choi as Bridesmaid (uncredited) |
 | Tatsumi Romano as Tour Girl (uncredited) |
| Chelsey Donn as Clerk (uncredited) |
| Directing | |
| Jason Winer | Director |
Writing | |
| Steve Gordon | Story |
| Peter Baynham | Screenplay |
Production | |
| Russell Brand | Executive Producer |
| Scott Kroopf | Executive Producer |
| Larry Brezner | Producer |
| Nik Linnen | Executive Producer |
| J.C. Spink | Executive Producer |
Directing | |
| Michael Pitt | First Assistant Director |
Crew | |
| Jery Hewitt | Stunt Coordinator |
Directing | |
| Adam Weisinger | Second Assistant Director |
| Andrew Fiero | Second Assistant Director |
Production | |
| Ray Quinlan | Unit Production Manager |
| Langley Perer | Co-Producer |
| Michael Tadross | Unit Production Manager |
Lighting | |
| Steve Ramsey | Chief Lighting Technician |
Crew | |
| Amy Leigh Johnson | Unit Publicist |
Editing | |
| Mo Henry | Negative Cutter |
Production | |
| Ray Quinlan | Associate Producer |
Sound | |
| John T. Reitz | Sound Re-Recording Mixer |
Camera | |
| Vincent Arteca | Best Boy Grip |
Costume & Make-Up | |
| Alan D'Angerio | Hairstylist |
| Chris Clark | Key Hair Stylist |
Camera | |
| Brendan Quinlan | Key Grip |
| Alisa M. Colley | Second Assistant "A" Camera |
Costume & Make-Up | |
| Courtney McClain | Assistant Costume Designer |
| Nicola Schuller | Makeup & Hair |
Crew | |
| Angel Pine | Post Production Supervisor |
Sound | |
| Gregg Rudloff | Sound Re-Recording Mixer |
| Michael Schmidt | Boom Operator |
Costume & Make-Up | |
| Kimmie Dellechiaie | Set Costumer |
| Askia Won-Ling Jacob | Costumer |
Editing | |
| Melissa Bretherton | First Assistant Editor |
Sound | |
| James Sabat | Sound Mixer |
| Jerry Ross | Supervising Sound Editor |
Camera | |
| Chris Reynolds | First Assistant "B" Camera |
| Eve Strickman | Second Assistant "B" Camera |
| Aurelia Winborn | First Assistant "A" Camera |
| David Knox | "B" Camera Operator |
Costume & Make-Up | |
| Kimberly Baird | Costumer |
| Margot Boccia | Makeup Artist |
Sound | |
| David Bach | Supervising Dialogue Editor |
Lighting | |
| Ben Noble | Rigging Gaffer |
Sound | |
| Eugene Gearty | Sound Designer |
Art | |
| Dave Weinman | Leadman |
| Robert Ludemann | Graphic Designer |
Sound | |
| Bob Beher | Foley Editor |
| David Jobe | Foley Mixer |
| Richard King | Sound Designer |
Editing | |
| Jan Yarbrough | Digital Intermediate Colorist |
| Kathleen Largay | Digital Intermediate Editor |
Directing | |
| Charlie Picerni | Second Unit Director |
Sound | |
| John Joseph Thomas | Sound Effects Editor |
| Stephanie Brown | Assistant Sound Editor |
| David Lee Fein | Foley Artist |
| Hilda Hodges | Foley Artist |
| Alan Freedman | ADR Mixer |
Editing | |
| Russ Senzatimore | Assistant Editor |
| David Orr | Color Timer |
Sound | |
| Thomas J. O'Connell | ADR Mixer |
Art | |
| Patrick Campbell | Storyboard Artist |
Editing | |
| Adam Ohl | Digital Intermediate Producer |
Production | |
| Charles Zalben | Location Manager |
Sound | |
| David Bach | Supervising ADR Editor |
Directing | |
| Michael Tadross Jr. | Second Second Assistant Director |
Art | |
| I. Javier Ameijeiras | Production Illustrator |
Crew | |
| Rico Omega Alston | Video Assist Operator |
| Ralph Volpe | Transportation Captain |
| Shauna Duggins | Stunt Double |
Production | |
| Michael Tadross | Producer |
Camera | |
| Uta Briesewitz | Director of Photography |
Art | |
| Doug Huszti | Art Direction |
Sound | |
| Theodore Shapiro | Original Music Composer |
Editing | |
| Brent White | Editor |
Art | |
| Sarah Knowles | Production Design |
Production | |
| Kathleen Chopin | Casting |
Art | |
| Chryss Hionis | Set Decoration |
Production | |
| Chris Bender | Producer |
Costume & Make-Up | |
| Juliet Polcsa | Costume Design |
Production | |
| Kevin McCormick | Producer |
Costume & Make-Up | |
| Victor DeNicola | Key Hair Stylist |
Visual Effects | |
| Jim Rider | Visual Effects Supervisor |
Sound | |
| Oliver Hug | Music Editor |
| Lee Gilmore | Sound Effects Editor |
Camera | |
| Petr Hlinomaz | Camera Operator |
Directing | |
| Mary Cybulski | Script Supervisor |
Art | |
| Brianne Zulauf | Art Department Coordinator |
Costume & Make-Up | |
| Kate Edwards | Costume Supervisor |
| Marcia Patten | Costume Supervisor |
Sound | |
| JoJo Villanueva | Music Supervisor |
| Bruce Tanis | Sound Effects Editor |
Crew | |
| Jeff Brink | Special Effects Coordinator |
Camera | |
| George Peters | Camera Operator |
Costume & Make-Up | |
| Kimmie Guiragossian | Key Costumer |
| Eldo Ray Estes | Makeup Artist |
Art | |
| Joseph A. Alfieri Jr. | Construction Coordinator |
Sound | |
| Erica Weis | Supervising Music Editor |
Art | |
| Michael Saccio | Property Master |
Camera | |
| Jeff Muhlstock | Steadicam Operator |
Costume & Make-Up | |
| Todd Kleitsch | Makeup Department Head |
Camera | |
| Barry Wetcher | Still Photographer |
Costume & Make-Up | |
| Derek Moreno | Set Costumer |
Sound | |
| Dave Jordan | Music Supervisor |
| Phil Barrie | Sound Effects Editor |
Crew | |
| John Carrafa | Choreographer |
Costume & Make-Up | |
| Suzy Mazzarese-Allison | Hair Department Head |
Camera | |
| Steven Search | First Assistant Camera |
| Jay Feather | Camera Operator |
Costume & Make-Up | |
| Louise McCarthy | Key Makeup Artist |
Crew | |
| Whitney Coleman | Stunt Double |
Sound | |
| Alison Fisher | Dialogue Editor |
Crew | |
| Chris Barnes | Stunts |
Production | |
| Bill Draper | Executive In Charge Of Production |
