| UNIGRACE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Uniea Limited | Private company limited by shares | Live |
| UNION PHONE HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FASHION JEWELLERY LIMITED | Private company limited by shares | Live |
| UNZEN JEANS LIMITED | Private company limited by shares | Dissolved |
| UNION DITTY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PROSPER COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION CONNECTION LIMITED | Private company limited by shares | Dissolved |
| UNION REGENT COMPANY LIMITED | Private company limited by shares | Live |
| UNION KENETIC LIMITED | Private company limited by shares | Dissolved |
| UNION LEO COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HOPE INVESTMENTS LIMITED | Private company limited by shares | Live |
| GRASS UNION LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION RESOURCES LIMITED | Private company limited by shares | Dissolved |
| UNITED CHANNEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIKI LIMITED | Private company limited by shares | Dissolved |
| RICH UNION ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Rugby Union | Company limited by guarantee | Live |
| RICH UNION CARGO LIMITED | Private company limited by shares | Live |
| RICH UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION CODE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNIHIGH LIMITED | Private company limited by shares | Live |
| UNIHORSE LIMITED | Private company limited by shares | Dissolved |
| UNICO COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED TECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIHONOUR LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CARGO LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ESTHETIC PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| UNISS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION GREENS COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNICONCEPT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| JIANGSU UNISON SILK COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNIXPRESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITEFACT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONSTIN LIMITED | Private company limited by shares | Dissolved |
| UNIONSRICH LIMITED | Private company limited by shares | Dissolved |
| UNITED SUCCESS MANUFACTURER LIMITED | Private company limited by shares | Live |
| UNION FAITH FASHION GARMENTS LIMITED | Private company limited by shares | Dissolved |
| UNIGLOBE CONSULTANTS LIMITED | Private company limited by shares | Live |
| ARBORETUM UNDERWRITING AGENCY LIMITED | Private company limited by shares | Dissolved |
| UNICON INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CHART LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BOAT LIMITED | Private company limited by shares | Dissolved |
| UNISON RIDGE LIMITED | Private company limited by shares | Live |
| UNION SIX DYEING WORKS LIMITED | Private company limited by shares | Dissolved |
| UNION RICH PLASTIC FACTORY LIMITED | Private company limited by shares | Live |
| TAI UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNITED ART COMPUTER EMBROIDERY FACTORY LIMITED | Private company limited by shares | Dissolved |
| JETCROSS UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION POWER PLASTIC LIMITED | Private company limited by shares | Live |
| SMART UNIVERSE TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNIDATA LIMITED | Private company limited by shares | Dissolved |
| EAST CHINA UNIVERSITY OF CHEMICAL TECHNOLOGY ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| UNION SPARK LIMITED | Private company limited by shares | Dissolved |
| UNABASHED LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION PITH INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| PAN UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION VAST LIMITED | Private company limited by shares | Dissolved |
| UPM UNIQUE PRODUCTS MANUFACTURING LIMITED | Private company limited by shares | Live |
| UNISCIENCE LIMITED | Private company limited by shares | Dissolved |
| INCOME UNION LIMITED | Private company limited by shares | Dissolved |
| UNIONLINK SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNIONEWS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION FINE MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNISION-WATCH MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| UNI-DAS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNINET LIMITED | Private company limited by shares | Dissolved |
| MILLION UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIQUE CLASSIC LIMITED | Private company limited by shares | Live |
| UNICHAMPION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIPLUS (INTERNATIONAL) INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION CAN INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL-COVANLI LIMITED | Private company limited by shares | Dissolved |
| UNIFUND CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIFUND ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| UNITON GEAR LIMITED | Private company limited by shares | Dissolved |
| UNITED BBG LIMITED | Private company limited by shares | Dissolved |
| UNIDRIVE LIMITED | Private company limited by shares | Dissolved |
| UNIPRO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITICO LIMITED | Private company limited by shares | Live |
| UNITED SCORE INVESTMENTS LIMITED | Private company limited by shares | Live Commenced dormancy on 19-Mar-1996 |
| UNIQUE DE MICHAEL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| KAISER UNION INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| YON UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| YON UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SOURCE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL LEADER COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL EXCHANGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSITY OF HONG KONG BUSINESS SCHOOL | Company limited by guarantee | Dissolved |
| UNION POND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIFUND GLOBAL LIMITED | Private company limited by shares | Dissolved |
| WEALTHY UNIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| FOR UNIT COMPANY LIMITED | Private company limited by shares | Live |