| Koro's Big Day Out | |
| Director: | Hayao Miyazaki |
| Producer: | Tamami Yamamoto |
| Starring: | Itsuki Komazawa Haruyo Moriyoshi Kenji Imura |
| Music: | Yuji Nomi |
| Editing: | Megumi Uchida |
| Studio: | Studio Ghibli |
| Distributor: | Ghibli Museum |
| Runtime: | 14 minutes |
| Country: | Japan |
| Language: | Japanese |
, Koro's Big Day Out (lit. Koro's big walk), is a 2002 Japanese animated short film. Hayao Miyazaki of Studio Ghibli is the writer and director. The film is about Koro the puppy, who runs away from his mistress, experiences some adventures around town and who is finally happily returned home. The film is exclusively shown at the Ghibli Museum and Ghibli Park, both in Japan.