De Newtons gaan met de kampeerwagen op vakantie. Vader Richard is bijzonder opgetogen, maar de kinderen vinden zo'n lange rit maar niks, tot er plots een onverwachte lifter opduikt: Beethoven!!! Beethoven zorgt naar gewoonte weer voor een heleboel verrassingenen pret, maar wanneer twee stuntelige dieven het pad van de Newtons kruisen, is hij het die de familie beschermt en verdedigt.
Nee, helaas is Beethoven's 3rd nog niet beschikbaar op Netflix in Nederland.
| Directing | David Mickey Evans | Director |
| Writing | Jeff Schechter | Writer |
| Writing | Amy Holden Jones | Characters |
| Writing | John Hughes | Characters |
| Costume & Make-Up | Dean Sadler | Key Makeup Artist |
| Editing | Harry Keramidas | Editor |
| Art | Marc Dabe | Art Direction |
| Camera | John B. Aronson | Director of Photography |
| Production | David Bixler | Producer |
| Costume & Make-Up | Elizabeth Sloan Freel | Key Hair Stylist |
| Production | Dean E. Fronk | Casting Director |
| Art | Chester Kaczenski | Production Design |
| Directing | Melanie Grefé | Second Assistant Director |
| Costume & Make-Up | Bonnie Stauch | Costume Design |
| Sound | Philip Giffin | Original Music Composer |
| Production | Kelli Konop | Unit Production Manager |
| Production | Donald Paul Pemrick | Casting Director |
| Directing | Marco Black | First Assistant Director |
| Production | Kelli Konop | Producer |
| Art | Judi Giovanni | Set Decoration |
| Crew | Gary J. Wayton | Stunt Coordinator |
| Crew | Paul E. Short | Stunts |
| Directing | Brent Clark | Second Assistant Director |
