Enkele dagen voor zijn huwelijk krijgt Jason Kelly de taak zijn grootvader Dick, een voormalige generaal van het leger, naar een gemeenschap voor gepensioneerden te brengen. Dick vindt dat zijn kleinzoon gaat trouwen met een ongeschikte vrouw. Gedurende hun reis raken de twee in allerlei problemen tijdens bezoeken aan kroegen en studentenfeesten.
Nee, helaas is Dirty Grandpa nog niet beschikbaar op Netflix in Nederland.
| Writing | John Phillips | Screenplay |
| Directing | Dan Mazer | Director |
| Production | Jason Barrett | Producer |
| Production | Barry Josephson | Producer |
| Production | Michael Simkin | Producer |
| Crew | Mickey Giacomazzi | Stunt Coordinator |
| Production | John Phillips | Executive Producer |
| Camera | Eric Alan Edwards | Director of Photography |
| Editing | Anne McCabe | Editor |
| Art | William Arnold | Production Design |
| Sound | Michael Andrews | Original Music Composer |
| Art | Jeremy Woolsey | Art Direction |
| Directing | Diane Durant | Script Supervisor |
| Sound | Jay Meagher | Sound Mixer |
| Art | Chloe Lipp | Art Department Coordinator |
| Crew | Elizabeth Davidovich | Stunt Double |
| Crew | Rick Avery | Stunt Double |
| Camera | Kyler Dennis | Second Assistant "C" Camera |
| Costume & Make-Up | Christie Wittenborn | Costume Designer |
| Sound | Kier Lehman | Music Supervisor |
| Production | Michael Flynn | Executive Producer |
| Production | Cathy Sandrich Gelfond | Casting |
| Production | John Friedberg | Executive Producer |
| Production | Anton Lessine | Executive Producer |
| Production | Amanda Mackey | Casting |
| Production | Sasha Shapiro | Executive Producer |
| Directing | Matthew Goodwin | Second Assistant Director |
| Production | Michael Flynn | Unit Production Manager |
| Directing | Josh King | First Assistant Director |
| Crew | Marilyn Giacomazzi | Stunt Double |
| Production | Bill Block | Producer |
