| UNSC Limited | Private company limited by shares | Live |
| Unscramble HK Limited | Private company limited by shares | Live |
| Unscripted Limited | Private company limited by shares | Live |
| Unseen Limited | Private company limited by shares | Live |
| UNSEMI CONDUCTOR INTERNATIONAL COMPANY LIMITED | | Live |
| Hong Kong Unser Technology Co., Limited | Private company limited by shares | Live |
| UNSION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNSM CO., LIMITED | Private company limited by shares | Live |
| ASIA PACIFIC COALITION AGAINST UNSOLICITED COMMERCIAL EMAIL, LIMITED -THE- | Company limited by guarantee | Dissolved |
| UN-SONDEUR GROUP LIMITED | Private company limited by shares | Live |
| Unspoken. Limited | Private company limited by shares | Live |
| Unspun, Limited | Private company limited by shares | Live |
| UNSQUARE ARCHITECTS LIMITED | Private company limited by shares | Dissolved |
| UNST LIMITED | Private company limited by shares | Dissolved |
| Unstoppable Limited | Private company limited by shares | Live |
| Unstoppable You Limited | Private company limited by shares | Live |
| UNSTOPPABLE HK LIMITED | | Live |
| UNSTOPPABLE C LIMITED | | Live |
| UNSTOPPABLE GLOBAL LIMITED | | Live |
| UNSTOPPABLE STUDIO LIMITED | | Live |
| Unstoppable Trading Company Limited | Private company limited by shares | Live |
| UNSTOPPABLE WIND COMPANY LIMITED | Private company limited by shares | Live |
| Unstoppable.vision Limited | Private company limited by shares | Live |
| Unstructured International Limited | Private company limited by shares | Live |
| UNStudio Asia Limited | Private company limited by shares | Live |
| Unsung Heroes Group Limited | Private company limited by shares | Live |
| UN-Supply Pty Limited | Private company limited by shares | Live |
| UNsuspended Limited | Private company limited by shares | Dissolved |
| UNSWERVING LOVE LIMITED | Private company limited by shares | Live |
| UNSWORTH UK LIMITED | | Live |