 | Diane Keaton als J.C. Wiatt |
 | Sam Shepard als Dr. Jeff Cooper |
 | Harold Ramis als Steven Buchner |
 | Kristina Kennedy als Elizabeth Wiatt |
| Michelle Kennedy als Elizabeth Wiatt |
 | Sam Wanamaker als Fritz Curtis |
 | James Spader als Ken Arrenberg |
 | Pat Hingle als Hughes Larrabee |
 | Britt Leach als Vern Boone |
 | Mary Gross als Charlotte Elkman |
| Kim Sebastian als Robin |
 | Elizabeth Bennett als Mrs. Atwood |
 | Beverly Todd als Ann Bowen |
 | William Frankfather als Merle White |
 | Annie O'Donnell als Wilma White |
 | George Petrie als Everett Sloane |
 | Victoria Jackson als Eve |
| John C. Cooke als Dwayne |
| Carol Gillies als Helga Von Haupt |
| Hansford Rowe als Sam Potts |
| Mary O'Sullivan als Katie Potts |
 | Linda Ellerbee als Narrator (voice) |
| Patricia Estrin als Secretary |
 | Peter Elbling als Maitre'd |
 | Shera Danese als Cloak Room Attendant |
 | Angel David als Stockboy |
| Nicholas Cascone als Delivery Boy |
| Patti Johns als Nanny |
 | Annie Golden als Nanny |
 | Jennifer Balgobin als Nanny |
| Marianne Doherty als Food Chain Secretary |
| Eugenie Ross-Leming als Park Mom |
 | Dori Brenner als Park Mom |
 | Jane Elliott als Park Mom |
 | Ben Diskin als Ben |
 | Paxton Whitehead als "Center" Instructor |
 | Constance Forslund als Receptionist |
| John J. Philbin als Oldtimer |
| Richard Humphreys als Oldtimer |
 | Billy Beck als Roofer |
| Margaret Hussey als Realtor |
 | Katherine Borowitz als Yuppie Wife |
 | Robin Bartlett als Yuppie Wife |
 | Chris Noth als Yuppie Husband |
| Barry Heins als Yuppie Husband |
| Lisa Fuller als Stacy |
| Kate O'Connell als Store Owner |
 | Mary Peters als Postmaster |
| Elizabeth Philbin als Nurse/Mayor |
| Annie Meyers-Shyer als Little Girl in Vermont |
 | Margaret Whitton als Executive In Conference Room (uncredited) |
| William A. Fraker | Director of Photography |
| Charles Shyer | Screenplay |
| Bill Conti | Original Music Composer |
| Charles Shyer | Director |
| Nancy Meyers | Screenplay |
| Nancy Meyers | Producer |
| Lynzee Klingman | Editor |
| Bruce A. Block | Associate Producer |
| Pam Dixon | Casting |
| Jeffrey Howard | Production Design |
| Beala Neel | Art Direction |
| Lisa Fischer | Set Decoration |
| Tom Lucas | Makeup Artist |
| John Frazier | Special Effects Supervisor |
| Susan Becker | Costume Designer |
| Siedah Garrett | Vocals |
| Michele Ader | Unit Production Manager |
| John T. Kretchmer | First Assistant Director |
| Carole Keligian | Second Assistant Director |
| Pamela Alch | Script Supervisor |
| David E. Diano | Camera Operator |
| Gerald Boatright | Chief Lighting Technician |
| Richard Turner | First Assistant Camera |
| Marc Margulies | First Assistant Camera |
| Lex Rawlins | Second Assistant Camera |
| Don Cropper | Second Assistant Camera |
| Joseph F. Valentine | Steadicam Operator |
| Larry Fallick | First Assistant Editor |
| Dorothy McGowan | Assistant Editor |
| Frank E. Warner | Supervising Sound Editor |
| Bill Wylie | Sound Editor |
| Gary S. Gerlich | Sound Editor |
| David Horton Jr. | Sound Editor |
| David M. Horton | Sound Editor |
| Bill Nelson | Sound Mixer |
| Stephen A. Hope | Music Editor |
| Jack Eskew | Orchestrator |
| Robert J. Litt | Sound Re-Recording Mixer |
| Elliot Tyson | Sound Re-Recording Mixer |
| Rick Kline | Sound Re-Recording Mixer |
| Michael John Bateman | Supervising ADR Editor |
| Hank Salerno | ADR Editor |
| Corinne Sessarego | ADR Editor |
| Sue Breitrose | ADR Editor |
| Sonny Pettijohn | ADR Editor |
| KG Ramsey | Hairstylist |
| Jim Lapidis | Costume Supervisor |
| Rosemarie Fall | Costume Supervisor |
| Shelley Kirkwood | Unit Publicist |
| Joyce Rudolph | Still Photographer |
| John R. Shannon | Still Photographer |
| Julie B. Crane | Producer's Assistant |
| Michael Shoob | Producer's Assistant |
| Bill MacSems | Property Master |
| George Stokes | Construction Coordinator |
| David Berthiaume | Location Manager |
| Joe O'Har | Location Manager |
| Al LaVerde | Key Grip |
| Don Yamasaki | Best Boy Grip |
| Jules Strasser | Boom Operator |
| Chuck Hanson | Transportation Coordinator |
| David Menapace | Transportation Captain |
| Barbara Gelman | Additional Second Assistant Director |
| Carol Lefko | Casting Associate |
| Reatha Grey | Extras Casting |
| Barbara Harris | ADR Voice Casting |
| Ken Marschall | Matte Painter |
| Bruce A. Block | Second Unit Director |
| G. Mac Brown | Unit Production Manager |
| Jack Priestley | Second Unit Director of Photography |
| David Greene | Additional Photography |
| Vebe Borge | Additional Second Assistant Director |
| Rick Dallago | Location Manager |
| Kerry Hayes | Still Photographer |
| Walter Rivera | Costumer |
| Cathy K. Stoia | Production Coordinator |
| Ann Miller | Location Casting |
