| PENTAX LIMITED | Private company limited by shares | Dissolved |
| CARL ZEISS PENTAX CO. LIMITED | Private company limited by shares | Dissolved |
| Pentax VQ Co., Limited | Private company limited by shares | Dissolved |
| PENTAX SINTAI HOLDING CO., LIMITED | Private company limited by shares | Live |
| Pentax Group Limited | Private company limited by shares | Live |
| PENTAX HONG KONG LIMITED | Private company limited by shares | Live |
| PENTAX MILLS LIMITED | Private company limited by shares | Dissolved |
| PENTAX Optical Component Hong Kong Limited | Private company limited by shares | Dissolved |
| PENTAX TRADING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| PENTAX WATCH LIMITED | Private company limited by shares | Live |