| CHINA-TRADE (H.Y.) LIMITED | Private company limited by shares | Dissolved |
| CHUNG TAI (H.Y.) LIMITED | Private company limited by shares | Live |
| EST (HY) CO., LIMITED | Private company limited by shares | Live |
| H.Y. EDUCATION CENTRE LIMITED | | Live |
| HILLS (H.Y.) CATERING GROUP LIMITED | Private company limited by shares | Live |
| H.Y. Infinity Limited | | Live |
| H.Y. & H.T. INVESTMENT LIMITED | Private company limited by shares | Live |
| H.Y. MACHINERY & MATERIALS LIMITED | Private company limited by shares | Dissolved |
| H.Y. Shipping Co. Limited | Private company limited by shares | Live |
| TAKE WIN (H.Y.) LIMITED | Private company limited by shares | Live |
| WING HAN (HY) LIMITED | Private company limited by shares | Live |
| HY111 LIMITED | | Live |
| H.Y.A International Co., Limited | Private company limited by shares | Live |
| H.YA INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| HYAB OSMOCURE (ASIA) LIMITED | Private company limited by shares | Dissolved |
| HYACINTH LIMITED | Private company limited by shares | Dissolved |
| HYACINTH HK LIMITED | Private company limited by shares | Dissolved |
| HYACINTH COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hyacinth Limited | Private company limited by shares | Live |
| HYACINTH CAPITAL LIMITED | Private company limited by shares | Dissolved |
| Hyacinth Trading Co., Limited | Private company limited by shares | Dissolved |
| HYACINTH CONSULT LIMITED | Private company limited by shares | Dissolved |
| Hyacinth Corporation Limited | Private company limited by shares | Live |
| HYACINTH DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HYACINTH PAPER (HK) CO., LIMITED | Private company limited by shares | Live |
| HYACINTH HOME FASHION CO., LIMITED | Private company limited by shares | Live |
| Hyacinth Hong Kong Limited | Private company limited by shares | Live |
| Hyacinth International Limited | Private company limited by shares | Live |
| China Hyacinth International Limited | Private company limited by shares | Live |
| Hyacinth & Intl Limited | Private company limited by shares | Live |
| HYACINTH LOGISTICS LIMITED | Private company limited by shares | Live |
| HYACINTH PARTNERS LIMITED | Private company limited by shares | Dissolved |
| HYACINTH PARTNERS LIMITED | Private company limited by shares | Live |
| HYACINTH SERVICES CENTER FOR THE ELDERLY LIMITED | Company limited by guarantee | Live |
| HYACINTH STRATEGIES LIMITED | Private company limited by shares | Dissolved |
| HYACINTH TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HYACINTH TRADING LIMITED | | Live |
| HYACINTHUS LIMITED | Private company limited by shares | Live |
| HYADES & CO. LIMITED | Private company limited by shares | Live |
| HYAK LIFE LIMITED | | Live |
| HYAKKA COMPANY LIMITED | Private company limited by shares | Live |
| HANKYU HANSHIN HYAKKATEN KABUSHIKI KAISHA LIMITED | Private company limited by shares | Live |
| HYAKUICHI KITEI LIMITED | | Live |
| HYAKUNEN INTERNATIONAL, LIMITED | Private company limited by shares | Live Commenced dormancy on 15-Feb-2011 |
| Hyakunen Shokudo Limited | Private company limited by shares | Live |
| Hyakunousha International Limited | Private company limited by shares | Live |
| HYAKUNOUSHA TRADING (CHINA) LIMITED | | Live |
| CHINA HYAKUSAN ORE INDUSTRY GROUP HOLDING LIMITED | Private company limited by shares | Live |
| HYAKUSAN HK INVESTMENT LIMITED | Private company limited by shares | Live |
| HYALINE REALTY LIMITED | Private company limited by shares | Live |
| HYALINE SHIPPING (R. & D.) LIMITED | Private company limited by shares | Dissolved |
| HYALITE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hyaluron Pen Limited | Private company limited by shares | Live |
| HAN HYANG COMPANY LIMITED | Private company limited by shares | Dissolved |
| Kim Hyang Co., Limited | Private company limited by shares | Live |
| HYANG TRADE CO., LIMITED | Private company limited by shares | Live |
| SAM HYANG GLOBAL LIMITED | Private company limited by shares | Live |
| KO HYANG INVESTMENT LIMITED | Private company limited by shares | Live |
| HYANLINK INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Korea Hyanmou Electrics Limited | Private company limited by shares | Live |
| HYANNIS LIMITED | Private company limited by shares | Dissolved |
| SHIU HYAP KEE LIMITED | Private company limited by shares | Dissolved |
| HYASAN CO., LIMITED | Private company limited by shares | Dissolved |
| HYASON COMMERCIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hyat Limited | Private company limited by shares | Live |
| HYATA INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| Grand Hyatt House Interior Design & Engineering Co. Limited | Private company limited by shares | Live |
| Hyatt Hotels Consultancy Services Asia Pacific Limited | Private company limited by shares | Live Ceased dormancy on 27-Oct-2014 |
| GRAND HYATT TRADING LIMITED | Private company limited by shares | Live |
| ZURICH TRADING (HYATT) LIMITED | Private company limited by shares | Dissolved |
| HyattPass Limited | | Live |
| HYATTSVILLE LIMITED | Private company limited by shares | Dissolved |
| H.Y.B. TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HYBABA CO., LIMITED | Private company limited by shares | Live |
| HYBAL LIMITED | Private company limited by shares | Dissolved |
| Hyber Investment Co. Limited | Private company limited by shares | Live |
| Hyberlink Limited | | Live |
| Hybern Energy Hong Kong Limited | | Live |
| HYBERNIA INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HONG KONG HYBEROCK TRADING LIMITED | Private company limited by shares | Live |
| HYBERPACK PRODUCTIONS LIMITED | Private company limited by shares | Live |
| HYBERTECH ENTERPRISE (HONG KONG) LIMITED | Private company limited by shares | Live |
| HYBERTONE TECH LIMITED | Private company limited by shares | Live |
| HYBERTONE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HYBEST INTERNATIONAL GROUP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HYBIRDFASHION LIMITED | Private company limited by shares | Live |
| Hyblo Limited | | Live |
| HYBO MARINE ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| Hybo Network Technology Co., Limited | | Live |
| HONGKONG HYBO PETROLEUM DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| HYBO INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| Hybo Servicing Limited | Private company limited by shares | Live |
| HYBO SHIPPING LIMITED | Private company limited by shares | Live |
| HYBO TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| HYBONIA LIMITED | Private company limited by shares | Live |
| HYBORE (CHINA) LIMITED | Private company limited by shares | Live |
| HYBORE MARINE (CHINA) LIMITED | Private company limited by shares | Live |
| Hybotic Limited | Private company limited by shares | Live |
| HYBRIBIO LIMITED | Private company limited by shares | Live |
| HYBRIBIO GRACELAND BIOTECHNOLOGY CO LIMITED | Private company limited by shares | Live |