| Hyflux Utility WT (XC) Limited | Private company limited by shares | Live |
| Hyflux Utility WWT (XC) Limited | Private company limited by shares | Live |
| X-CALAIDA TECHNOLOGY LIMITED | Private company limited by shares | Live |
| XCALIBER LIMITED | Private company limited by shares | Live |
| Xcalibre (Asia) Limited | Private company limited by shares | Live |
| XCALU HK LIMITED | Private company limited by shares | Live |
| Xcamera (Hong Kong) Limited | Private company limited by shares | Live |
| XCAN ASIA LIMITED | Private company limited by shares | Dissolved |
| X-CAN INDUSTRIAL CO., LIMITED | | Live |
| XCAPE COMPANY LIMITED | Private company limited by shares | Live |
| XCAPE (SA) TYRE & SEAWEED CO., LIMITED | Private company limited by shares | Live |
| XCAPE TRADING LIMITED | Private company limited by shares | Live |
| XCapital Investment Limited | Private company limited by shares | Live |
| XCAR LIMITED | Private company limited by shares | Live |
| Xcar nuo trade company Limited | Private company limited by shares | Live |
| Xccell Limited | Private company limited by shares | Live |
| XC-DC International Co., Limited | Private company limited by shares | Dissolved |
| Xcdh Technology Limited | Private company limited by shares | Live |
| Xcedo Limited | Private company limited by shares | Live |
| XCEED LIMITED | Company limited by guarantee | Live |
| Xceed OD Consulting Company Limited | Private company limited by shares | Live |
| XCEED-RC LIMITED | Private company limited by shares | Live |
| X-CEL LIMITED | Private company limited by shares | Dissolved |
| XCEL LIMITED | Private company limited by shares | Dissolved |
| XCEL 360 LIMITED | Private company limited by shares | Dissolved |
| Xcel Limited | Private company limited by shares | Live |
| Xcelerate Limited | Private company limited by shares | Live |
| XCELL ELECTRONICS LIMITED | Private company limited by shares | Live |
| X-cell Power Technology Limited | Private company limited by shares | Live |
| Young Xcell Limited | | Live |
| xCellence Limited | Private company limited by shares | Live |
| XCELLENCE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Xcellence Worldwide Enterprises Limited | Private company limited by shares | Live |
| Xcellent Design Limited | Private company limited by shares | Live |
| XCELLENT SALES GROUP LIMITED | Private company limited by shares | Dissolved |
| Xcellent Inspiration Limited | Private company limited by shares | Live |
| XCELLENT LASER SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| XCELLENT IDENTITY NETWORK LIMITED | Private company limited by shares | Dissolved |
| Xcellerate Limited | Private company limited by shares | Dissolved |
| XcellGene Limited | | Live |
| XCELLS LIMITED | Private company limited by shares | Live |
| Xcelom Limited | Private company limited by shares | Live |
| Xcelsus Asia Pte Limited | Private company limited by shares | Live |
| XCELSUS CO., LIMITED | Private company limited by shares | Live |
| XCELTEK LIMITED | Private company limited by shares | Live |
| Xcentz Limited | Private company limited by shares | Live |
| XCEPT Limited | Private company limited by shares | Live |
| DESIGN X'CER Q'TION LIMITED | Private company limited by shares | Dissolved |
| Xces HK Limited | Private company limited by shares | Live |
| Xcess Limited | | Live |
| XCHAIN SOLUTIONS LIMITED | Private company limited by shares | Live |
| X-Chair Limited | Private company limited by shares | Live |
| XChang Limited | | Live |
| XCHANG TRADE CO., LIMITED | Private company limited by shares | Live |
| PAM XCHANGE COMPANY LIMITED | Private company limited by shares | Live |
| ICT Xchange Limited | Private company limited by shares | Dissolved |
| 796 Xchange Limited | Private company limited by shares | Live |
| 982 Xchange Limited | Private company limited by shares | Dissolved |
| 990 Xchange Limited | Private company limited by shares | Live |
| Combo Xchange Limited | | Live |
| EUROPEAN FASHION XCHANGE LIMITED | Private company limited by shares | Live |
| xchangecapital Limited | Private company limited by shares | Live |
| XchangeHousing Limited | Private company limited by shares | Live |
| GGV (Xcharge) Limited | Private company limited by shares | Live |
| XCHARGE HK LIMITED | | Live |
| XCHEN TRADE CO., LIMITED | | Live |
| XCHING TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| XCHO Technology (HK) Limited | Private company limited by shares | Live |
| XCHRIS GROUP (HOLDING) LIMITED | Private company limited by shares | Dissolved |
| XCHUN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK XCHUN TRADE LIMITED | Private company limited by shares | Live |
| Xcinquemila Limited | Private company limited by shares | Live |
| LKF Xcite Limited | Private company limited by shares | Live |
| HONG KONG XCITY MEDICAL HOLDINGS LIMITED | Private company limited by shares | Live |
| XCJW ELECTRONICS LIMITED | | Live |
| X-CLEAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Xcloud HK Limited | Private company limited by shares | Live |
| XCLUSIV TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| XCLUSIVE CO LIMITED | | Live |
| XCLUSIVE PROMOTION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| XCLUSIVE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Xcluziv Limited | Private company limited by shares | Live |
| XCMACH INDUSTRIAL LIMITED | | Live |
| Xcoats Infinity Limited | Private company limited by shares | Live |
| Xcode Limited | Private company limited by shares | Live |
| Xcoin Limited | Private company limited by shares | Live |
| xcoinmakers Limited | Private company limited by shares | Live |
| XCOL Technology Limited | | Live |
| X-Color HK Limited | | Live |
| X.COM LIMITED | Private company limited by shares | Dissolved |
| X-COM CO., LIMITED | Private company limited by shares | Live |
| XCOMM LIMITED | Private company limited by shares | Live |
| XCOMM ECOMMERCE LIMITED | Private company limited by shares | Live |
| XCOMM TELECOMMUNICATIONS LIMITED | Private company limited by shares | Live |
| XCON COMPANY LIMITED | Private company limited by shares | Dissolved |
| Xcon Tech Co., Limited | | Live |
| XCONNECTION LIMITED | Private company limited by shares | Live |
| Xconomy Technology Limited | Private company limited by shares | Live |
| XCONTROL LIMITED | Private company limited by shares | Live |
| XCOOL HK COMPANY LIMITED | | Live |