| Company Name | Type | Status |
|---|---|---|
| CASIO COMPUTER (HONG KONG) LIMITED | Private company limited by shares | Live |
| MITSUI CASIO TELECOMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| COOL CUSTOM CASIOAK LIMITED | Live | |
| CASION GLOVE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| CASIOS CO LIMITED | Private company limited by shares | Live |