1986: De vrienden Harry en Lloyd, bekend van de eerste Dumb and Dumber-film, zijn nog tieners. Ze proberen om uit het programma voor 'speciale' studenten te komen, en in het normale highschool-leven terecht te komen.
Nee, helaas is Dumb and Dumberer: When Harry Met Lloyd nog niet beschikbaar op Netflix in Nederland.
| Production | Brad Krevoy | Producer |
| Production | Steven Stabler | Producer |
| Editing | Lawrence Jordan | Editor |
| Directing | Troy Miller | Director |
| Production | Oren Koules | Producer |
| Sound | Eban Schletter | Original Music Composer |
| Writing | Robert Brener | Screenplay |
| Writing | Troy Miller | Screenplay |
| Production | Charles B. Wessler | Producer |
| Camera | Anthony B. Richmond | Director of Photography |
| Production | Troy Miller | Producer |
| Writing | Bennett Yellin | Characters |
| Writing | Bobby Farrelly | Characters |
| Writing | Peter Farrelly | Characters |
| Costume & Make-Up | Susanna Puisto | Costume Designer |
| Art | Frank Galline | Set Decoration |
| Camera | George Richmond | Steadicam Operator |
| Camera | George Richmond | Camera Operator |
| Production | Richard Brener | Executive Producer |
| Crew | Annie Ellis | Stunts |
| Production | Bennett Yellin | Executive Producer |
| Writing | Robert Brener | Story |
| Production | Cale Boyter | Executive Producer |
| Production | Toby Emmerich | Executive Producer |
| Art | Paul Huggins | Production Design |
| Production | Tracey Baird | Production Supervisor |
| Production | Carl Mazzocone | Co-Producer |
| Production | Karen Hughes | Unit Production Manager |
| Production | Tally Barr | Associate Producer |
| Production | Robert Brener | Executive Producer |
| Crew | Rick Reynolds | Post Production Supervisor |
| Crew | Chuck Graydon | Driver |
| Production | John Papsidera | Casting |