 | David Gallagher als Richie Rich |
 | Eugene Levy als Professor Keenbean |
 | Keene Curtis als Herbert Cadbury |
 | Jake Richardson als Reggie Van Dough |
 | Martin Mull als Richard Rich |
 | Lesley Ann Warren als Regina Rich |
 | Richard Fancy als Mr. Van Dough |
 | Marla Maples als Mrs. Van Dough |
 | Michelle Trachtenberg als Gloria |
 | Blake Jeremy Collins als Freckles |
 | Austin Stout als Pee Wee |
 | Kathleen Freeman als Miss Peabody |
 | Richard Riehle als Sgt. Mooney |
| Don McLeod als Irona/Evil Irona |
 | Rex Smith als Rudy |
 | Christopher Boyer als Hudson |
 | Michael McDonald als Montgomery |
 | Robert Peters als Hungry Officer |
 | Candi Brough als Verva Twin #1 |
 | Randi Brough als Verva Twin #2 |
 | Billy Burnette als Nigel |
 | Jim Jackman als Shorty |
 | Janet Wood als Bank Teller |
 | Claire Andrew als Baby Ritchie Rich |
| John Crane als Slim |
| Robert Hart als Mick |
| Lacey Taylor Robbins als Caitlin |
| Lex Robbins als Alex |
| Alfred Atienza als Cappy |
| Cody Weselis als Billy |
 | Steven Cragg als Jeeves |
| Amy Kidd als Cynthia |
 | Julianna Lavin als Sitcom Mom |
| Michael Bonnabel als Sitcom Dad |
| Sue Ellen Enright als TV Reporter |
 | Ken Hanes als Anchorman |
 | Tawny Fere als Neighbor |
| Jennifer Joyce als Servant |
| Rick Dean als Smark Bystander |
| Ken Odom als Angry Bystander |
| Preston Ahearn als Dismayed Bystander |
| Sharon Meyers als Pretty Bystander |
| Manny Fernandez als Salvation Army Guy |
| Manny Fernandez als Fast Shopper |
| Jennifer Shami als Slow Shopper |
| Larry Robbins als Jolly Santa |
 | Patricia Elliott als Hazel |
| Tommy Woods als Smart Kid |
| Jotona Deason als Happy Kid |
| Nezben Deason als Good Looking Kid |
| Dan Fisher als Chief Officer |
| Joe Torrenueva als Prison Guard |
| Chrystina Myers als Driver |
| Shorty als Dollar |
| Rachel Duhame als Kid Near Car Hit (uncredited) |
 | Phil Hawn als Neighbor (uncredited) |
| Carlton Preston als Bulter (uncredited) |
 | Mary Ann Schmidt als Lab Scientist (uncredited) |
| John Murlowski | Director |
| Jason Feffer | Writer |
| Rob Kerchner | Writer |
| Mark Furey | Writer |
| Deddy Tzur | Music |
| Mike Elliott | Producer |
| Joseph P. Genier | Line Producer |
| Amy Goldberg | Co-Producer |
| Rob Kerchner | Co-Producer |
| Jeffrey A. Montgomery | Executive Producer |
| Lance H. Robbins | Executive Producer |
| Nathan Rotmensz | Associate Producer |
| Haim Saban | Executive Producer |
| Mike Upton | Line Producer |
| John Gilbert | Editor |
| Julie Ashton | Casting |
| Nava | Production Design |
| Roger Baer | Art Direction |
| John Jacob Earl | Set Decoration |
| Ryck Schmidt | Costume Design |
| Yolanda Halston | Key Makeup Artist |
| Brad Hardin | Creature Effects Technical Director |
| Joseph P. Genier | Unit Production Manager |
| Tim Andrew | First Assistant Director |
| Matt Blitz | Second Assistant Director |
| Craig Borden | Second Second Assistant Director |
| Alfie Kiernan | First Assistant Director |
| Casey Mako | Additional Second Assistant Director |
| Will Alovis | Property Master |
| Deno Antonini | On Set Dresser |
| Walsh Carvalho | Assistant Property Master |
| David Mocsary | Property Master |
| Gregory Neuhaus | Scenic Artist |
| Bob Renna | Petty Cash Buyer |
| Patrick Russo | Set Dresser |
| Keith Tucker | Storyboard Artist |
| Melissa McNees | Set Dresser |
| Josh Bower | Boom Operator |
| Dave Chertock | Dialogue Editor |
| Mark Lanza | Supervising Sound Editor |
| Marcus Ricaud | Sound Mixer |
| Stephen P. Robinson | Sound Designer |
| Alan B. Samuels | Sound Mixer |
| Russell Lukich | Special Effects Makeup Artist |
| Robert Pendergraft | Special Effects Supervisor |
| Mark Santora | Modeling |
| Daniel R. Casey | Visual Effects Supervisor |
| Nancy Fitzgerald | Visual Effects Producer |
| Christopher Hartt | Digital Effects Producer |
| Steve Preeg | Visual Effects |
| Ben Rush | Visual Effects |
| John Tissavary | Visual Effects |
| Julie Adair | Stunts |
| Chris Blackwood | Stunts |
| Bob Bragg | Stunts |
| Rachel Duhame | Stunts |
| Zack Duhame | Stunts |
| Tanner Gill | Stunts |
| Gary Guercio | Stunts |
| Danny Lundin | Stunts |
| Preston Lundin | Stunts |
| Kent W. Luttrell | Stunt Double |
| Cole S. McKay | Stunts |
| Cole S. McKay | Stunt Coordinator |
| Tom Poster | Stunts |
| Robin Tracey Sherwood | Stunts |
| Ellen Statham | Stunts |
| Patrick J. Statham | Stunt Coordinator |
| Nancy Thurston | Stunts |
| Tom Vicini | Stunt Double |
| Danny Weselis | Stunts |
| Todd Barron | Second Unit Director of Photography |
| Nathan Berggren | Assistant Camera |
| Clint Mac Borden | Grip |
| Geraldine Brezca | Video Assist Operator |
| Horacio Chacon | Electrician |
| Jeff Chassler | Electrician |
| Russ L. Conklin | Best Boy Electric |
| C.E. Courtney | Gaffer |
| Adam Dodds | Electrician |
| Greg Dorman | Additional Second Assistant Camera |
| Neil Fleischbein | Grip |
| Frank Gabusi | Grip |
| Zoli Hajdu | Grip |
| Chip Hart | Grip |
| Jerry Hill | Steadicam Operator |
| Andy C. Huber | Rigging Gaffer |
| Rick Davidson | Steadicam Operator |
| Christopher Kiso | Electrician |
| Steven D. Kucharski | Electrician |
| Eric Lee | Still Photographer |
| Christopher Lucchese | Dolly Grip |
| Matt McNary | Assistant Camera |
| Donovan Milcoch | Camera Operator |
| Dan Ming | First Assistant Camera |
| Christopher M. Morlock | Electrician |
| Gary Morris | Electrician |
| Chrystina Myers | Second Assistant Camera |
| Douglas M. Pavone | Key Grip |
| Travis Phung | Electrician |
| Dan Rossman | Grip |
| Ken Sax | Still Photographer |
| Paul Saylor | Best Boy Grip |
| Jennifer Schoenewald | Electrician |
| Robert Stillman | Grip |
| Ian Strang | Grip |
| Kim Swank | Second Assistant Camera |
| Manny Tapia | Rigging Supervisor |
| Brad Wallace | Camera Loader |
| Romy Stutman | Casting Assistant |
| Magdalena Baker | On Set Dresser |
| Chad Lurie | Post Production Coordinator |
| Eric S. Rollman | Executive In Charge Of Post Production |
| Jordan Burwick | Location Manager |
| Teri Nelson Carpenter | Music Supervisor |
| Udi Harpaz | Music Arranger |
| David Ari Leon | Music Supervisor |
| Peter J. Clark | Script Supervisor |
| Lynn Sisco | Script Supervisor |
| Kimberly Lollar | Driver |
| Mia Adams | Additional Production Assistant |
| Prince L. Board | Key Production Assistant |
| Rodd Feingold | Other |
| Karen Gorodetzky | Production Coordinator |
| Rodger Halston | Actor's Assistant |
| Jeff Jenofsky | Production Assistant |
| Mark Lovedale | Production Assistant |
| Colleen Murphy | Assistant Director |
| Erin K. O'Brien | Production Assistant |
| Michael Reardon | Legal Services |
| Stephan Rothman | Production Accountant |
| Paige Wilbanks | Production Assistant |
| Alfred Harvey | Characters |
| Warren Kremer | Characters |
| Neil Tolkin | Development Producer |
| Ted Barba | Stunt Driver |
| Christian Sebaldt | Director of Photography |
| Justin Lundin | Stunts |
| Joey Gardner | Stunts |
