| William International Facilities Management Company Limited | Private company limited by shares | Live |
| WILLIAM INTERNATIONAL KINDERGARTEN & PLAY SCHOOL CO. LIMITED | Private company limited by shares | Dissolved |
| William International Environmental Protection Limited | Private company limited by shares | Live |
| ROYAL WILLIAM INTERNATIONAL CO., LIMITED -THE- | Private company limited by shares | Dissolved |
| William Royal International (HK) Company Limited | Private company limited by shares | Live |
| WILLIAM INTERNATIONAL SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| William And Sons International Trading Company Limited | Private company limited by shares | Live |
| WILLIAM FLUID TECHNOLOGY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WILLIAM INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| William & Wassermann International Technology Co., Limited | Private company limited by shares | Live |
| WILLIAM INT'L ENVIRONMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HK WILLIAM INT'L INVESTMENT GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| ITALY WILLIAM OLD HEAD INT'L DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ITALY BOSS WILLIAM INT'L LIMITED | Private company limited by shares | Dissolved |
| WILLIAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MAN & WILLIAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CHAU INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM FOK INVESTMENT CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| Ryan William Investment Limited | Private company limited by shares | Live |
| William Investments Limited | Private company limited by shares | Live |
| WILLIAM SANI INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM C. JACK & CO. LTD | Private company limited by shares | Dissolved |
| WILLIAM & JEFFERY LIMITED | Private company limited by shares | Live |
| William Kateny Hong Kong Limited | Private company limited by shares | Live |
| SO WILLIAM (HOI KEE) ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM KING LEE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM KING LIMITED | Private company limited by shares | Dissolved |
| KING WILLIAM LIMITED | | Live |
| KING WILLIAM HOLDING CO., LIMITED | Private company limited by shares | Live |
| WILLIAM WOOL KNITTERS LIMITED | Private company limited by shares | Dissolved |
| KOYO WILLIAM LIMITED | Private company limited by shares | Live |
| WILLIAM LANDESMAN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ITALY WILLIAM LAORENTOU INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM INSURANCE AGENCY LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM (CHINA TRADE) LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM ENTERPRISES LIMITED | Public company limited by shares | Live |
| LAWE WILLIAM EXPORT & IMPORT LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| LAWE WILLIAM INTERNATIONAL INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ENGLAND WILLIAM PRINCE LEATHER (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| WILLIAM LOGISTICS LIMITED | Private company limited by shares | Live |
| WILLIAM LOGISTICS (CHINA) CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong William Logistics Limited | Private company limited by shares | Live |
| WILLIAM & LOUISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| William K Supply Chain Management Limited | Private company limited by shares | Dissolved |
| WILLIAM FOK MANAGEMENT CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM MANUFACTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM HO MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM MARK & COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM MARSH & COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM 919 (UK) NEW MATERIAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WILLIAM AND MAURICE LIMITED | Private company limited by shares | Live |
| William & Mavis Consulting Limited | Private company limited by shares | Live |
| WILLIAM MCDOWALL AND COMPANY LIMITED | Private company limited by shares | Live |
| WILLIAM M. MERCER LIMITED | Private company limited by shares | Dissolved |
| WILLIAM METAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM, MICHAEL & WILLIAM COMPANY, LIMITED | Private company limited by shares | Dissolved |
| MICHAEL & WILLIAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ZHEJIANG WILLIAM MOLD CO., LIMITED | Private company limited by shares | Live |
| WILLIAM MOTOR LIMITED | Private company limited by shares | Live |
| WILLIAM MOULD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Mount William Investment Group Limited | Private company limited by shares | Live |
| WILLIAM MUSIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM NODES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM AND JEFRE OPTOMETRIC CENTRE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM PAPER PRODUCTS FACTORY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM CAPITAL & PARTNERS LIMITED | Private company limited by shares | Dissolved |
| WILLIAM & PARTNERS CONSULTANTS LIMITED | Private company limited by shares | Live |
| WILLIAM GLOBAL PARTNERS LIMITED | Private company limited by shares | Live |
| WILLIAM & PARTNERS INVESTMENT GROUP (H.K.) LIMITED | Private company limited by shares | Dissolved |
| WILLIAM PERRY ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM PHARMACEUTICAL AGENCY LIMITED | Private company limited by shares | Live |
| PORT WILLIAM LIMITED | Private company limited by shares | Dissolved |
| WILLIAM POWELL LIMITED | Private company limited by shares | Dissolved |
| PRINCE WILLIAM LIMITED | Private company limited by shares | Live |
| WILLIAM PRINTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIAM OFFSET PRINTING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WILLIAM SAMPLING PRINTING LIMITED | Private company limited by shares | Dissolved |
| WILLIAM COMPANY TRADING AND PRINTING LIMITED | Private company limited by shares | Dissolved |
| Fort William Productions Limited | Private company limited by shares | Live |
| WILLIAM MARK PROMOTIONS LIMITED | Private company limited by shares | Live |
| William Property Investment Company Limited | Private company limited by shares | Dissolved |
| WILLIAM PROSPERITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| EU ROYAL WILLIAM PROSPERITY GROUP LIMITED | Private company limited by shares | Live |
| WILLIAM REHABILITATION CENTRE LIMITED | | Live |
| WILLIAM REINFELD & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM ROBINHOOD LIMITED | Private company limited by shares | Live |
| WILLIAM RUPERT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| William Russell Limited | Private company limited by shares | Live |
| WILLIAM SANI LIMITED | Private company limited by shares | Dissolved |
| GUANGDONG WILLIAM SANITARY WARE CO., LIMITED | Private company limited by shares | Live |
| WILLIAM LEE (SECRETARIES) LIMITED | Private company limited by shares | Live |
| WILLIAM LAU SERVICE CENTRE LIMITED | Private company limited by shares | Dissolved |
| WILLIAM SERVICES LIMITED | Private company limited by shares | Live |
| WILLIAM CLEANING SERVICES LIMITED | Private company limited by shares | Live |
| WILLIAM SHIPPING & MANAGEMENT SERVICES LIMITED | Private company limited by shares | Dissolved |
| WILLIAM SWIMMING POOL SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| William Secretarial Services Limited | Private company limited by shares | Live |
| William Shawn Trading Limited | | Live |