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 |
| Crew | Paul E. Short | Stunts |
| Writing | Jeff Schechter | Writer |
| Writing | Amy Holden Jones | Characters |
| Writing | John Hughes | Characters |
| Directing | Brent Clark | Second Assistant Director |
| Crew | Gary J. Wayton | Stunt Coordinator |
| Production | Kelli Konop | Unit Production Manager |
| Editing | Harry Keramidas | Editor |
| Production | Donald Paul Pemrick | Casting Director |
| Production | Kelli Konop | Producer |
| Directing | Melanie Grefé | Second Assistant Director |
| Costume & Make-Up | Dean Sadler | Key Makeup Artist |
| Sound | Philip Giffin | Original Music Composer |
| Camera | John B. Aronson | Director of Photography |
| Art | Marc Dabe | Art Direction |
| Production | David Bixler | Producer |
| Costume & Make-Up | Elizabeth Sloan Freel | Key Hair Stylist |
| Production | Dean E. Fronk | Casting Director |
| Directing | Marco Black | First Assistant Director |
| Art | Judi Giovanni | Set Decoration |
| Costume & Make-Up | Bonnie Stauch | Costume Design |
| Art | Chester Kaczenski | Production Design |
