| RUBICON LIMITED | Private company limited by shares | Live |
| Rubicon FAT Limited | Private company limited by shares | Live |
| RUBICON UNO LIMITED | | Live |
| RUBICON TRE LIMITED | | Live |
| RUBICON DUE LIMITED | | Live |
| RUBICON OFFICE APPLIANCES LIMITED | Private company limited by shares | Live |
| RUBICON IMPT & EXPT CO., LIMITED | Private company limited by shares | Live |
| RUBICON JEWELRY CO., LIMITED | Private company limited by shares | Dissolved |
| RUBICON SOLUTIONS CO., LIMITED | Private company limited by shares | Live |
| Rubicon Digital Limited | Private company limited by shares | Live |
| RUBICON ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| RUBICON ESTATES LIMITED | Private company limited by shares | Live Commenced dormancy on 15-May-2007 |
| RUBICON INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBICON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Rubicon Investments Limited | Private company limited by shares | Dissolved |
| RUBICON REALTY LIMITED | Private company limited by shares | Dissolved |
| RUBICON SERVICE COMPANY LIMITED | | Live |
| Rubicon System Service Limited | Private company limited by shares | Live |
| RUBICON TRADING LIMITED | Private company limited by shares | Live |
| RUBICONE LIMITED | Private company limited by shares | Live |
| Rubidea Limited | Private company limited by shares | Live |
| RUBIE INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| RUBIE INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| RUBIES COMPANY LIMITED | Private company limited by shares | Live |
| RUBIE'S ENTERPRISES LIMITED | Private company limited by shares | Live |
| Rubiette Limited | Private company limited by shares | Live |
| RUBIGEM LIMITED | Private company limited by shares | Dissolved |
| Rubik Company Limited | Private company limited by shares | Live |
| RUBILACXE LIMITED | Private company limited by shares | Dissolved |
| RUBIMEX TRADING LIMITED | Private company limited by shares | Live |
| RUBIN LIMITED | Private company limited by shares | Live |
| RUBIN WAY LIMITED | Private company limited by shares | Live |
| RUBIN MAX LIMITED | Private company limited by shares | Live |
| RUBIN BUSINESS LIMITED | Private company limited by shares | Live |
| RUBIN ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| RUBIN TRADING LIMITED | Private company limited by shares | Live |
| RUBINA LIMITED | Private company limited by shares | Dissolved |
| RUBINE CHINA INTERNATIONAL (PRIVATE) LIMITED | Private company limited by shares | Live |
| HONGKONG RUBINE DRAGON CHINESE LITURGICAL CELEBRATION CO., LIMITED | Private company limited by shares | Live |
| RUBINE TRADING COMPANY LIMITED | Private company limited by shares | Live |
| Rubinet Limited | Private company limited by shares | Live |
| Remer Rubinetterie s.p.a. (HK) Limited | Private company limited by shares | Dissolved |
| R.S. RUBINETTERIE SARDE S.R.L. LIMITED | Private company limited by shares | Dissolved |
| RUBINSTEIN LIMITED | Private company limited by shares | Dissolved |
| RUBIO LIMITED | Private company limited by shares | Dissolved |
| Rubio Chan Business Consulting Limited | | Live |
| ANTONIO RUBIO INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Rubio Monocoat Hong Kong Limited | Private company limited by shares | Live |
| Studio Rubio Hong Kong Limited | Private company limited by shares | Live |
| RUBIS CAPITAL LIMITED | Private company limited by shares | Live |
| Rubison Digital Solutions Limited | Private company limited by shares | Live |
| Rubiwom Company Limited | Private company limited by shares | Live |
| RUBIX CO. LIMITED | Private company limited by shares | Live |
| Rubix Limited | Private company limited by shares | Live |
| Rubix BC I Limited | | Live |
| Rubiza HK Limited | Private company limited by shares | Live |
| RUBLE LIMITED | Private company limited by shares | Live |
| RUBLO LIMITED | Private company limited by shares | Dissolved |
| Rubo Technology Limited | Private company limited by shares | Live |
| Rubon Holding Co., Limited | Private company limited by shares | Live |
| Rubotherm Asia Limited | Private company limited by shares | Live |
| Terra Rubra Limited | | Live |
| RUBRICK LIMITED | Private company limited by shares | Dissolved |
| RUBRICS LIMITED | Private company limited by shares | Dissolved |
| Rubris Limited | Private company limited by shares | Live |
| RUBRIX LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI GUIYUE RUBSCIENCE SHARPENER LIMITED | Private company limited by shares | Live |
| RUBSTIK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RUBSTIK (H.K.) INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| RUBSTONE RESOURCES LIMITED | Private company limited by shares | Live |
| RUBTACT ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| RUBUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBY WIN LIMITED | Private company limited by shares | Live |
| RUBY WAY LIMITED | Private company limited by shares | Live |
| RUBY TOP LIMITED | Private company limited by shares | Dissolved |
| RUBY LIMITED | Private company limited by shares | Dissolved |
| SEA RUBY LIMITED | Private company limited by shares | Dissolved |
| SKY RUBY LIMITED | Private company limited by shares | Dissolved |
| RUBY LIMITED | Private company limited by shares | Dissolved |
| RUBY TAR OIL COMPANY LIMITED | Private company limited by shares | Live |
| RUBY LIMITED | Private company limited by shares | Live |
| RUBY SKY LIMITED | Private company limited by shares | Live |
| TOP RUBY LIMITED | Private company limited by shares | Live |
| RUBY ART COMPANY LIMITED | | Live |
| Ruby 62 Limited | | Live |
| RUBY IMA LIMITED | | Live |
| ABERDEEN RUBY CHINESE RESTAURANT LIMITED | Private company limited by shares | Live |
| ANAIS RUBY LIMITED | Private company limited by shares | Dissolved |
| RUBY (ASIA) LIMITED | Private company limited by shares | Live |
| RUBY ASIA HOTELS LIMITED | Private company limited by shares | Live |
| BEST RUBY LIMITED | Private company limited by shares | Dissolved |
| RUBY BIRD LIMITED | Private company limited by shares | Live Commenced dormancy on 13-May-2004 |
| CALIFORNIA RUBY ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| RUBY CAPITAL LIMITED | Private company limited by shares | Live |
| RUBY CENTRE LIMITED | Private company limited by shares | Dissolved |
| CHINA RUBY LIMITED | Private company limited by shares | Live |
| CHINA RUBY ENTERPRISE LIMITED | Private company limited by shares | Live |
| RUBY CHINESE RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| TO KWA WAN RUBY CHINESE RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| RUBY CLASS LIMITED | Private company limited by shares | Dissolved |