How to Save a Marriage and Ruin Your Life (1968) — Cast
Cast
| George Simmons | (uncredited) |
| Hal Taggart | (uncredited) |
| Eli Wallach | Harry |
| Tony Regan | (uncredited) |
| Claude Stroud | Convention Hall Attendee |
| Woodrow Parfrey | Rankin |
| Leoda Richards | (uncredited) |
| Katharine Bard | Bounty Hunter |
| Eddie Smith | Bar Patron |
| Robert Hitchcock | (uncredited) |
| Cosmo Sardo | (uncredited) |
| Dee Gardner | Bar Patron |
| Monroe Arnold | Reggie Hammond |
| Dick Cherney | (uncredited) |
| Anne Jackson | Karchy Laszlo |
| Stella Stevens | Corman |
| Bernard Sell | (uncredited) |
| Dean Martin | Sloane |
| Fred Walton | Pedestrian |
| Frieda Rentie | Countergirl |
| Dotty Ertel | Minor Role |
| Al Silvani | Pedestrian |
| Harry Denny | Pedestrian |
| Bruce Chesse | Groom |
| Joe Evans | Pedestrian |
| William Wintersole | (uncredited) |
| Leon Alton | (uncredited) |
| Bobby Gilbert | Pedestrian |
| Murray Pollack | Bar Patron |
| Betty Field | Thelma |
| Alan Oppenheimer | Everett |
| Shelley Morrison | Marcia |
| Paul Power | Maitre d' |
| Jack Albertson | Slotkin |
| George Furth | Roger Thornhill |
| John Pedrini | Pedestrian |
| Monty O'Grady | (uncredited) |
| George Golden | (uncredited) |
| Joe Gray | (uncredited) |
Crew
| George R. Nelson | Set Decoration |
| Stanley Shapiro | Writer |
| Philip W. Anderson | Editor |
| Jack Haynes | Sound |
| Ben Lane | Makeup Supervisor |
| Ray Gosnell Jr. | Assistant Director |
| Charles J. Rice | Sound Supervisor |
| Michel Legrand | Original Music Composer |
| Virginia Jones | Hairstylist |
| Lee Garmes | Director of Photography |
| Robert Clatworthy | Production Design |
| Robert B. Shepard | Playback Singer |
| William Randall Jr. | Sound |
| Nate Monaster | Writer |
| Max Frankel | Property Master |
| Moss Mabry | Costume Design |
| Fielder Cook | Director |
| Stanley Shapiro | Producer |