Trailer
 | Chevy Chase as Ty Webb |
 | Rodney Dangerfield as Al Czervik |
 | Ted Knight as Judge Smails |
 | Bill Murray as Carl Spackler |
 | Michael O'Keefe as Danny Noonan |
 | Sarah Holcomb as Maggie O'Hooligan |
 | Cindy Morgan as Lacey Underall |
 | Albert Salmi as Mr. Noonan |
 | Scott Colomby as Tony D'Annunzio |
 | Dan Resin as Dr. Beeper |
 | Elaine Aiken as Mrs. Noonan |
 | Henry Wilcoxon as The Bishop |
 | Lois Kibbee as Mrs. Smails |
 | Brian Doyle-Murray as Lou Loomis |
 | Ann Ryerson as Grace |
| Thomas A. Carlin as Sandy McFiddish |
| John F. Barmon Jr. as Spaulding Smails |
| Peter Berkrot as Angie D'Annunzio |
 | Hamilton Mitchell as Motormouth |
| Scott Powell as Gatsby |
| Ann Crilley as Suki |
 | Cordis Heard as Wally |
 | Brian McConnachie as Scott |
| Scott Sudden as Richard Richards |
| Jackie Davis as Smoke |
| Minerva Scelza as Joey D'Annunzio |
| Kenneth Burritt as Mr. Havercamp |
| Rebecca Burritt as Mrs. Havercamp |
 | Barbara Keegan as Noble Noyes |
| Scott Jackson as Chuck Schick |
| Anna Upstrom as Blonde Bombshell |
| Ron Frank as Pat Noonan |
| Patricia Wilcox as Nancy Noonan |
| Debi Frank as Kathleen Noonan |
| Tony Gulliver as Ray - Old Caddy |
| Kim Bordeaux as Pre-Deb |
| Lori Lowe as Pre-Deb |
| Marcus Breece as Lifeguard |
| Mark Chiriboga as Terry the Hippie |
| Fred Buch as Angry Husband |
| Frank Schuller as Charlie the Cook |
| Mel Pape as Butler |
| Marge McKenna as Lady on Boat |
| Bruce McLaughlin as Old Crony |
| Dennis McCormack as Dennis Noonan |
 | Violet Ramis as Noonan Child |
| Judy Arman as Beeper's Girlfriend |
| Dr. Dow as Mr. Wang |
| Paige Coffman as Little Girl at Pool |
| Donna M. Wiggin as Woman at Pool |
| James Hotchkiss as Old Crony |
| Production | |
| Jon Peters | Executive Producer |
| Douglas Kenney | Producer |
Camera | |
| Stevan Larner | Director of Photography |
Directing | |
| Harold Ramis | Director |
Crew | |
| Alex Edlin | Stunts |
| Tom Bahr | Utility Stunts |
| Ricou Browning Jr. | Stunt Double |
| Marc Mercury | Stunts |
Production | |
| Mark Canton | Executive In Charge Of Production |
Directing | |
| Ricou Browning | Second Unit Director |
Production | |
| Donald MacDonald | Associate Producer |
| Wallis Nicita | Casting |
| Rusty Lemorande | Executive In Charge Of Production |
| Ted Swanson | Production Manager |
Editing | |
| Robert Barrere | Editor |
Directing | |
| David Whorf | First Assistant Director |
Camera | |
| Stanley E. Gilbert | Additional Photography |
Editing | |
| David Bretherton | Supervising Editor |
Costume & Make-Up | |
| Andre Lavery | Costumer |
Directing | |
| Charles Persons | Second Assistant Director |
Visual Effects | |
| John Dykstra | Special Effects Supervisor |
Editing | |
| Rachel Igel | Assistant Editor |
Costume & Make-Up | |
| Eric Seelig | Costume Supervisor |
| Vivian Cocheo | Costumer |
Sound | |
| Michael Evje | Production Sound Mixer |
| D. G. Fisher | Production Sound Mixer |
Camera | |
| James Pergola | Additional Photography |
Sound | |
| Richard Tyler | Sound Re-Recording Mixer |
Costume & Make-Up | |
| Elizabeth Lambert | Makeup Artist |
Sound | |
| Jack K. Tillar | Music Editor |
Camera | |
| Dean Williams | Still Photographer |
| Steve Wever | Still Photographer |
Writing | |
| Douglas Kenney | Writer |
Camera | |
| Michael McGowan | Camera Operator |
Sound | |
| Ray West | Sound Re-Recording Mixer |
| Roy M. Prendertgast | Music Editor |
Art | |
| George Szeptycki | Art Direction |
Camera | |
| Oscar Barber | Camera Operator |
Art | |
| Don K. Ivey | Set Decoration |
Costume & Make-Up | |
| Diane Johnson | Hairstylist |
Directing | |
| Susana Preston | Script Supervisor |
Camera | |
| John McGowan | Assistant Camera |
| John Winner | Assistant Camera |
Art | |
| Tom Coll | Set Decoration |
Sound | |
| Clive Smith | Sound Editor |
| Bob Minkler | Sound Re-Recording Mixer |
Lighting | |
| Calvin Maehl | Gaffer |
Sound | |
| Kenny Loggins | Music Coordinator |
Art | |
| Stan Jolley | Production Design |
Writing | |
| Brian Doyle-Murray | Writer |
Visual Effects | |
| Rocco Gioffre | Matte Painter |
Production | |
| Marian Polan | Extras Casting |
Sound | |
| Michael Dilbeck | Music Coordinator |
Editing | |
| William C. Carruth | Editor |
Visual Effects | |
| Grant McCune | Animation |
Sound | |
| Johnny Mandel | Original Music Composer |
Writing | |
| Harold Ramis | Writer |
Visual Effects | |
| Jeffrey Burke | Animation |
| Pat Brymer | Animation |
Camera | |
| Donald Carlson | Assistant Camera |
Art | |
| Dan Perri | Title Designer |
