| CIRO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CIROCCO AFRICA CONTINENT TRADING CO., LIMITED | Private company limited by shares | Live |
| Ciroco Metal Industry Co., Limited | Private company limited by shares | Live |
| SHENZHEN CIROLS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CIRON LIMITED | Private company limited by shares | Live |
| CIRONE CONSULTANCY LIMITED | Private company limited by shares | Live |
| Ciroor International Limited | Private company limited by shares | Live |
| CIRO'S LIMITED | Company limited by guarantee | Dissolved |
| CIROS BALLROOM LIMITED | Private company limited by shares | Dissolved |
| CirQ LIMITED | Private company limited by shares | Live |
| CIRQ MATERIALS LIMITED | Private company limited by shares | Live |
| CIRQUE LIMITED | Private company limited by shares | Live |
| Cirque du Soleil HK, Limited | Private company limited by shares | Live |
| CIRR LIMITED | Private company limited by shares | Live |
| CIRRIA INVESTMENTS LIMITED | Private company limited by shares | Live |
| Cirrific Limited | Private company limited by shares | Live |
| Cirrima Technology Limited | | Live |
| CIRROFI LIMITED | Private company limited by shares | Live |
| CIRRUS LIMITED | Private company limited by shares | Dissolved |
| CIRRUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CIRRUS LIMITED | Private company limited by shares | Live |
| CIRRUS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEAN CIRRUS LIMITED | Private company limited by shares | Live |
| CIRRUSERVE LIMITED | Private company limited by shares | Live |
| CIRRUS(HK) CO., LIMITED | Private company limited by shares | Live |
| CIRS HK LIMITED | Private company limited by shares | Live |
| CIRS GROUP (HK) LIMITED | Private company limited by shares | Live |
| CIRSPIN LIMITED | Private company limited by shares | Dissolved |
| CirTech GP Limited | Private company limited by shares | Live |
| CIRTech RN GP Limited | Private company limited by shares | Live |
| Creation Cirtech Co., Limited | Private company limited by shares | Live |
| CREATION CIRTECH (HK) CO., LIMITED | Private company limited by shares | Live |
| Florida CirTech (H.K.) Limited | Private company limited by shares | Live |
| CIR-TECH (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CIRTECH (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CIRTech Xjet Investments Limited | Private company limited by shares | Live |
| CIRTech Kaminario Investments Limited | Private company limited by shares | Live |
| CIRTECH TECHNOLOGY (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| CIRTEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| CIRTRON TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| CIRTRON TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| Cirtronix Limited | Private company limited by shares | Live |
| CIRWIN LIMITED | Private company limited by shares | Dissolved |