| RUBY CLOUD LIMITED | Private company limited by shares | Live |
| RUBY DELTA LIMITED | Private company limited by shares | Live |
| DRAGON RUBY LIMITED | Private company limited by shares | Live |
| Easter Ruby Limited | | Live |
| RUBY ENGLISH LIMITED | Private company limited by shares | Live |
| RUBY ENTERPRISE LIMITED | Private company limited by shares | Live |
| RUBY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RUBY WIN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| FORTUNE RUBY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| RUBY GAIN LIMITED | Private company limited by shares | Dissolved |
| GALA RUBY LIMITED | Private company limited by shares | Live |
| RUBY GAMMA LIMITED | | Live |
| GOLD RUBY LIMITED | Private company limited by shares | Dissolved |
| GOLD RUBY LIMITED | Private company limited by shares | Live |
| RUBY GRACE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GRAND RUBY LIMITED | Private company limited by shares | Dissolved |
| Happy Ruby Company Limited | Private company limited by shares | Live |
| RUBY HARBOUR LIMITED | Private company limited by shares | Dissolved |
| RUBY HILL LIMITED | Private company limited by shares | Dissolved |
| RUBY HILL LIMITED | Private company limited by shares | Live Commenced dormancy on 23-Dec-2013 |
| RUBY OCEAN HOLDING LIMITED | Private company limited by shares | Live |
| RUBY INC. LIMITED | Private company limited by shares | Live |
| SKY RUBY INVESTMENT LIMITED | Private company limited by shares | Live |
| RED RUBY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Ruby Investment Limited | Private company limited by shares | Live |
| RUBY WIN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| RUBY INVESTMENTS LIMITED | Private company limited by shares | Live |
| RICH RUBY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| RUBY ART JEWELLERY COMPANY LIMITED | Private company limited by shares | Live |
| MY JEWELRY (RUBY) LIMITED | Private company limited by shares | Dissolved |
| JOIN RUBY LIMITED | Private company limited by shares | Dissolved |
| RUBY LUCK LIMITED | Private company limited by shares | Dissolved |
| MAPLE RUBY MARITIME LIMITED | Private company limited by shares | Live |
| Ruby Mission Limited | Private company limited by shares | Live |
| Ruby Mongoose Company Limited | Private company limited by shares | Live |
| RUBY ORCHID LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL RUBY LIMITED | Private company limited by shares | Live |
| RUBY PACIFIC COMPANY LIMITED | Private company limited by shares | Live |
| RUBY PHOENIX LIMITED | Private company limited by shares | Dissolved |
| RUBY PROPERTIES LIMITED | Private company limited by shares | Live |
| PACIFIC RUBY RESOURCES LIMITED | Private company limited by shares | Live |
| RUBY RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| Ruby Restaurant Limited | Private company limited by shares | Live |
| RICH RUBY COMPANY LIMITED | Private company limited by shares | Live |
| RUBY RICH LIMITED | Private company limited by shares | Live |
| ROYAL RUBY COMPANY LIMITED | Private company limited by shares | Live |
| Eastern Ruby Shipping Limited | Private company limited by shares | Live |
| Horizon Ruby Shipping Limited | Private company limited by shares | Live |
| OCEAN RUBY SHIPPING LIMITED | Private company limited by shares | Live |
| Ruby Solutions Limited | Private company limited by shares | Live |
| SOUTHERN RUBY LIMITED | Private company limited by shares | Live |
| RUBY SPACE LIMITED | Private company limited by shares | Live |
| STAR RUBY LIMITED | Private company limited by shares | Live Ceased dormancy on 08-Jul-2014 |
| RUBY STREAM LIMITED | Private company limited by shares | Dissolved |
| RUBY SUCCESS LIMITED | Private company limited by shares | Dissolved |
| RUBY TALK LIMITED | | Live |
| RUBY PALACE THEATRE LIMITED | Private company limited by shares | Dissolved |
| RUBY TIME COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBY TIME LIMITED | Private company limited by shares | Dissolved |
| Ruby Gem Trade Limited | | Live |
| RUBY TSUI & COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBY UNIT COMPANY LIMITED | Private company limited by shares | Live |
| RUBY VALUE LIMITED | Private company limited by shares | Live |
| RUBY VIEW COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBY WENDA LIMITED | Private company limited by shares | Dissolved |
| RUBY ZONE LIMITED | Private company limited by shares | Live |
| RUBYANA LIMITED | Private company limited by shares | Live |
| RUBYBEANS CO., LIMITED | Private company limited by shares | Live |
| RubyCoded Limited | | Live |
| RUBYEXPORT TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBYGEM LIMITED | Private company limited by shares | Live |
| ruby.h. Limited | Private company limited by shares | Dissolved |
| RUBYJET LIMITED | Private company limited by shares | Dissolved |
| RUBYKON Limited | Private company limited by shares | Live |
| Rubyleo Company Limited | Private company limited by shares | Live |
| RUBYMARK FINANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUBYMARK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| RUBYMAX LIMITED | Private company limited by shares | Dissolved |
| RUBYPINK LIMITED | Private company limited by shares | Live |
| RUBYPOND LIMITED | Private company limited by shares | Dissolved |
| RUBYROCK CAPITAL CO., LIMITED | Private company limited by shares | Live |
| Rubyrock Group Limited | Private company limited by shares | Live |
| RUBYSIDES COMPANY LIMITED | | Live |
| RUBYSTAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| RUBYTAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUCAI TRADE LIMITED | | Live |
| Rucas Eco Company Limited | Private company limited by shares | Live |
| Rucas Furniture Co., Limited | | Live |
| RUCCESSM LIMITED | Private company limited by shares | Dissolved |
| PIA RUCCI LIMITED | Private company limited by shares | Dissolved |
| RUCCI GROUP LIMITED | Private company limited by shares | Live |
| Rucci Lighting Limited | Private company limited by shares | Live |
| RUCET CUSTOM BEARING (HK) CO., LIMITED | Private company limited by shares | Live |
| RUCH INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| RUCHE HONG KONG Co., Limited | Private company limited by shares | Live |
| RUCHENG ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Ruchika Unwired Technologies Limited | | Live |
| RUCHU (HONG KONG) GROUP LIMITED | Private company limited by shares | Live |
| RUCK LAW LIMITED | Private company limited by shares | Dissolved |
| RUCK TRADE LIMITED | | Live |