| Y. WILLIAM COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WILLIAM S. T. LEE & COMPANY LIMITED | Private company limited by shares | Live |
| Y. WILLIAM YU COMPANY, LIMITED | Private company limited by shares | Live |
| WILLIAM H. HUI COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM HAY & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WILLIAM LW & COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM LAM & COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM W. T. HSU & COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM K. K. LEE COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM LUK & COMPANY LIMITED | Private company limited by shares | Dissolved |
| LIN & WILLIAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM YU LIMITED | Private company limited by shares | Dissolved |
| WILLIAM HU LIMITED | Private company limited by shares | Live |
| WILLIAM YU COMPANY LIMITED | Private company limited by shares | Live |
| William Ho Company Limited | Private company limited by shares | Live |
| WILLIAM LAW LIMITED | Private company limited by shares | Live |
| William Du & Co Limited | Private company limited by shares | Live |
| WILLIAM ARK LIMITED | Private company limited by shares | Live |
| SUN & WILLIAM LIMITED | Private company limited by shares | Live |
| WILLIAM ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| William Investment Advisory Limited | Private company limited by shares | Live |
| WILLIAM S.T. LEE INSURANCE AGENCY LIMITED | Private company limited by shares | Dissolved |
| ALEX & WILLIAM INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM ALUMINIUM WORK LIMITED | Private company limited by shares | Dissolved |
| HK WILLIAM APPAREL GROUP LIMITED | Private company limited by shares | Live |
| WILLIAM H. KOPKE JR., ASIA LIMITED | Private company limited by shares | Live |
| WILLIAM WAN & ASSOCIATES LIMITED | Private company limited by shares | Live |
| WILLIAM W. T. HSU & ASSOCIATES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM NG & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM HSU ARCHITECTS & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM BENTON & ASSOCIATES LIMITED | Private company limited by shares | Live |
| WILLIAM CHOW & ASSOCIATES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM E. CONNOR & ASSOCIATES LIMITED | Private company limited by shares | Live |
| WILLIAM HO DESIGN ASSOCIATES LIMITED | Private company limited by shares | Live |
| A.T. & WILLIAM LIMITED | Private company limited by shares | Live |
| William Wealth Australia Company Limited | Private company limited by shares | Dissolved |
| WILLIAM AUTO BRAKE COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM AUTO EQUIP. PRODUCT (HK) LIMITED | Private company limited by shares | Live |
| WILLIAM BARCLAY & SON LIMITED | Private company limited by shares | Dissolved |
| William Thomas Beijing Limited | Private company limited by shares | Live |
| SCOTTISH WILLIAM BELL (CHINA) LIMITED | Private company limited by shares | Live |
| WILLIAM BRADLEY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM & HOO (BROTHERS) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM AND BROTHERS COMPANY LIMITED | | Live |
| WILLIAM SHIPPING & BROTHERS CO. LIMITED | Private company limited by shares | Live |
| WILLIAM BROWN & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| CARL & WILLIAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CHAMPION LIMITED | Private company limited by shares | Live |
| WILLIAM CHANDLER & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CHANG AGENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CHANG JEWELLERY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM JACKS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM O'NEIL CHINA PVT LIMITED | Private company limited by shares | Live |
| WILLIAM CHING & COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM C.K. CHAU COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM C. K. HU & CO., LIMITED | Private company limited by shares | Dissolved |
| WILLIAM NG & CO., LIMITED | Private company limited by shares | Live |
| Candice William Chemicals Co., Limited | Private company limited by shares | Live |
| William Industrial Group Co., Limited | | Live |
| WILLIAM & JOHN TRADING CO., LIMITED | Private company limited by shares | Live |
| William Technology Co., Limited | | Live |
| WILLIAM CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| SIR WILLIAM HALCROW-TEP CONSULTANTS CO. LIMITED | Private company limited by shares | Dissolved |
| WILLIAM SAFETY CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| William Business Consulting Limited | | Live |
| WILLIAM COURTENAY CONSULTING LIMITED | Private company limited by shares | Dissolved |
| SAXON WILLIAM EDUCATION CONSULTING LIMITED | Private company limited by shares | Live |
| WILLIAM SHAW CONSULTING LIMITED | Private company limited by shares | Live |
| WILLIAM CORPORATION LIMITED | Private company limited by shares | Live |
| WILLIAM C PEI ENTERPRISES CORPORATION LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ROCK CORPORATION LIMITED | Private company limited by shares | Dissolved |
| WILLIAM COURT INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| William Credit Company Limited | Private company limited by shares | Live |
| WILLIAM H. CUTTS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DANIELS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DECORATION & TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| DENMARK MARK WILLIAM INTERNATIONAL FINERY LIMITED | Private company limited by shares | Live |
| William Dental Care Limited | | Live |
| WILLIAM HUI DESIGN LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CHAN DESIGN (HONG KONG) LIMITED | Private company limited by shares | Live |
| WILLIAM CHARLES DESIGNS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DEVELOPMENT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM OVERSEAS DEVELOPMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DRAGON LIMITED | Private company limited by shares | Dissolved |
| WILLIAM DREW COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ENGEL HOLDING LIMITED | Private company limited by shares | Live |
| WILLIAM ENGINEERING LIMITED | Private company limited by shares | Live |
| WILLIAM CONSULTANCY ENGINEERING LIMITED | Private company limited by shares | Live |
| KK William Enterprise Limited | Private company limited by shares | Live |
| WILLIAM ENTERPRISES COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ENTERPRISES LIMITED | Private company limited by shares | Live |
| MARK WILLIAM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| H.K WILLIAM COMPLETE EQUIPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| WILLIAM EQUITY COMPANY LIMITED | Private company limited by shares | Live |