The War with Grandpa
- Gore: 2020
- Nyika: United States of America
- Genre: Comedy, Family
- Studio: Marro Films, EFO Films, Tri G, West Madison Entertainment
- Keyword: friendship, birthday, grandfather, teenage girl, family, family conflict, attic, changing room, resentment, duringcreditsstinger
- Mutungamiriri: Tim Hill
- Cast: Robert De Niro, Uma Thurman, Rob Riggle, Oakes Fegley, Laura Marano, Cheech Marin