| Country | Japan (JP) |
| UN/LOCODE | WUZ |
| Name | Karuizawa, Nagano |
| Name Without Diacritics | Karuizawa, Nagano |
| Region | 20 |
| Function Code | -----6-- |
| Function | Multi-use Location |
| Status Code | AF (Approved by National Facilitation Body) |
| Date | 1601 |
| Location (UN Format) | 3621N 13836E |