| Cathay Photonics Limited | Private company limited by shares | Live |
| CATHAY (PIECE GOODS) COMPANY, LIMITED | Private company limited by shares | Dissolved |
| PIONEER CATHAY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CATHAY PLATINUM RESOURCE CAPITAL LIMITED | Private company limited by shares | Dissolved |
| CATHAY POWER LIMITED | Private company limited by shares | Dissolved |
| CATHAY PRESS LIMITED | Private company limited by shares | Dissolved |
| CATHAY METAL PRESSWORKS, LIMITED -THE- | Private company limited by shares | Dissolved |
| HK CATHAY PRINCEPS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CATHAY FILM PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| CATHAY PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| CATHAY ATLANTIC PRODUCTS LIMITED | Private company limited by shares | Live |
| Cathay Safety Products Limited | Private company limited by shares | Live |
| CATHAY PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CATHAY PROPERTY LIMITED | Private company limited by shares | Dissolved |
| CATHAY PROPERTY AGENCY LIMITED | Private company limited by shares | Live |
| CATHAY REALTY & PROPERTY LIMITED | Private company limited by shares | Dissolved |
| Cathay Prosperity Maritime Limited | | Live |
| CATHAY PUBLISHERS LIMITED | Private company limited by shares | Live |
| CATHAY PUBLISHING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY QUINOA INTERNATIONAL HOLDING GROUP LIMITED | Private company limited by shares | Live |
| CATHAY RAINBOW DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Cathay Rankealth Group Co., Limited | Private company limited by shares | Live |
| CATHAY REAL ESTATE DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY GOLD REFINERY CORPORATION LIMITED | Private company limited by shares | Live |
| CATHAY REGAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CATHAY MOTOR REPAIR COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY RESOURCES LIMITED | Private company limited by shares | Dissolved |
| Cathay Resources Reserve Limited | Private company limited by shares | Live |
| CATHAY RESTAURANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY RICH LIMITED | Private company limited by shares | Dissolved |
| Cathay Clean Science And Technology Co., Limited | Private company limited by shares | Live |
| CATHAY SECURITIES LIMITED | Private company limited by shares | Dissolved |
| CATHAY SECURITIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| GRAND CATHAY SECURITIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| CATHAY SECURITY LIMITED | Private company limited by shares | Dissolved |
| CATHAY SEMICONDUCTOR LIGHTING INDUSTRY INC LIMITED | Private company limited by shares | Live |
| CATHAY TRADE SERVICES, ASIA LIMITED | Private company limited by shares | Dissolved |
| CATHAY CONSULTING SERVICES CO., LIMITED | Private company limited by shares | Live |
| CATHAY EXPLORATION SERVICES LIMITED | Private company limited by shares | Dissolved |
| CATHAY PACIFIC CATERING SERVICES (H.K.) LIMITED | Private company limited by shares | Live |
| CATHAY GENERAL SERVICES (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| CATHAY FILM SERVICES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INDUSTRIAL SERVICES (HK) LIMITED | Private company limited by shares | Dissolved |
| CATHAY INSURANCE SERVICES LIMITED | Private company limited by shares | Live |
| CATHAY PACIFIC SERVICES LIMITED | Private company limited by shares | Live |
| CATHAY CHI SHING METAL MANUFACTORY LIMITED | Private company limited by shares | Live |
| SHUI SHING CATHAY LIMITED | Private company limited by shares | Dissolved |
| CATHAY SHOES MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| SINO CATHAY HOLDING CO., LIMITED | Private company limited by shares | Live |
| CATHAY SOLUTIONS LIMITED | Private company limited by shares | Live |
| CATHAY SOURCE (HK) LIMITED | Private company limited by shares | Live |
| Cathay Sources Limited | Private company limited by shares | Live |
| CATHAY SOURCING PRIVATE LIMITED | Private company limited by shares | Live |
| SOUTH CATHAY LIMITED | Private company limited by shares | Dissolved |
| CATHAY AND SPIRITUAL CO., LIMITED | Private company limited by shares | Dissolved |
| CATHAY STANDARD LIMITED | Private company limited by shares | Dissolved |
| Cathay Star Limited | Private company limited by shares | Live |
| Cathay Capital Strategies Limited | Private company limited by shares | Live |
| CATHAY SUCCESS LIMITED | Private company limited by shares | Dissolved |
| Cathay Sunrise Limited | Private company limited by shares | Live |
| CATHAY SUPERENCE (HK) LIMITED | Private company limited by shares | Dissolved |
| CATHAY SWAN LIMITED | Private company limited by shares | Live |
| CATHAY SYNDICATE LIMITED | Private company limited by shares | Dissolved |
| CATHAY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| Cathay System Limited | Private company limited by shares | Live |
| CATHAY TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| CATHAY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Smart Cathay Technologies Company Limited | | Live |
| JP CATHAY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Cathay Data Technology Limited | Private company limited by shares | Live |
| CATHAY ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Cathay Financial Technology Co., Limited | Private company limited by shares | Live |
| Cathay Technology Investment Limited | Private company limited by shares | Live |
| Cathay Smart Technology Investment Limited | Private company limited by shares | Live |
| CATHAY TEXTILE CORPORATION, LIMITED | Private company limited by shares | Dissolved |
| CATHAY TEXTILE AND GARMENT INDUSTRIES LIMITED | Private company limited by shares | Live |
| CATHAY TIMEPIECES (HOLDING) LIMITED | Private company limited by shares | Dissolved |
| CATHAY TIMEPIECES (HOLDING) LIMITED | Private company limited by shares | Live |
| CATHAY TOURS LIMITED | Private company limited by shares | Dissolved |
| CATHAY TOYO ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY TOYS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY B TRADE, LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRADEHOUSE LIMITED | Private company limited by shares | Live |
| CATHAY TRADER STEAMSHIP & ESTATES LIMITED | Private company limited by shares | Dissolved |
| CATHAY COTTON GOODS TRADERS LIMITED | Private company limited by shares | Live |
| CATHAY TRADERS, (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY ATLANTIC TRADING LIMITED | Private company limited by shares | Dissolved |
| CATHAY ATLANTIC TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY CENTURY TRADING LIMITED | Private company limited by shares | Dissolved |
| CATHAY DRAGON TRADING LIMITED | Private company limited by shares | Dissolved |
| Fortune Cathay Trading Limited | | Live |
| CATHAY HARVEST TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRADING AND SHIPPING LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRANS CO., LIMITED | Private company limited by shares | Dissolved |
| CATHAY TRAVEL (JUST GOOD) LIMITED | Private company limited by shares | Live |
| TRUE CATHAY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CATHAY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED CATHAY CO., LIMITED | Private company limited by shares | Live |