| S.Y. KAO LIMITED | Private company limited by shares | Dissolved |
| S.Y. CHENG LIMITED | Private company limited by shares | Dissolved |
| S.Y. Engineering Limited | Private company limited by shares | Live |
| S.Y. Engineering Limited | Private company limited by shares | Live |
| S.Y. ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| S.Y. Global (Hong Kong) Co. Limited | Private company limited by shares | Live |
| KUAT S.Y. LIMITED | Private company limited by shares | Live |
| S.Y. SOLUTION LIMITED | Private company limited by shares | Dissolved |
| WELTRADE (SY) LIMITED | Private company limited by shares | Live |
| SYACT LIMITED | Private company limited by shares | Live |
| SYAILENDRA (HK) LIMITED | Private company limited by shares | Live |
| SYAKAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYAL LIMITED | Private company limited by shares | Live |
| HK SYAL BEAUTY CUSTOM LIMITED | Private company limited by shares | Live |
| Syalijia Co., Limited | | Live |
| Syan Engineering Limited | | Live |
| TAIWAN SYAN ELECTRIC HOLDING LIMITED | Private company limited by shares | Dissolved |
| Syang Trade Limited | | Live |
| SYANHAIKASYA (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG SYANQUEEN TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SYAO TRADE CO., LIMITED | Private company limited by shares | Live |
| SYARIKATRICO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| AIR SYATEMS LIMITED | Private company limited by shares | Dissolved |
| SYATTER LIMITED | Private company limited by shares | Live |
| SY&AY LIMITED | Private company limited by shares | Live |
| SY.B CONSULTING ASIA LIMITED | Private company limited by shares | Live |
| SYBA (China) Limited | Private company limited by shares | Live |
| SYBA TECH LIMITED | Private company limited by shares | Live |
| SYBARIS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sybaris Limited | Private company limited by shares | Live |
| SYBARITE LIMITED | Private company limited by shares | Live |
| SYBARITE HK LIMITED | Private company limited by shares | Live |
| Sybarites Limited | Private company limited by shares | Dissolved |
| Sybaritic International Limited | Private company limited by shares | Dissolved |
| SYBARIUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sybase 365 Limited | Private company limited by shares | Dissolved |
| SYBASE CHINA LIMITED | Private company limited by shares | Dissolved |
| SYBASE HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SYBASE OPTICS - ELECTRICAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SYBASE INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| SYBAY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SYBELLA LIMITED | Private company limited by shares | Dissolved |
| Syber Pty Limited | Private company limited by shares | Live |
| SYBER SENSE IOT COMPANY LIMITED | Private company limited by shares | Live |
| SYBER-DYNE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SYBERGENIUS LIMITED | | Live |
| SYBERGY ENTERPRISES LIMITED | Private company limited by shares | Live |
| SYBERTH CO., LIMITED | Private company limited by shares | Dissolved |
| SYBEST ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sybil Systems Limited | Private company limited by shares | Live |
| Sybmol Co., Limited | Private company limited by shares | Live |
| SYBON PHARMACEUTICAL & CHEMICAL CO., LIMITED | Private company limited by shares | Live |
| Sybor Networks Limited | Private company limited by shares | Live |
| Sybosy Limited | Private company limited by shares | Live |
| Sybron (HK) Co., Limited | | Live |
| SYC. D & P CO., LIMITED | Private company limited by shares | Dissolved |
| S.Y.C TOURISM DEVELOPMENT AGENCY LIMITED | Private company limited by shares | Live |
| S.Y.C. (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| S.Y.C. (INTERNATIONAL) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK S.Y.C International Film Production Co., Limited | Private company limited by shares | Live |
| Syca Company Limited | Private company limited by shares | Live |
| SYCAMORE LIMITED | Private company limited by shares | Dissolved |
| Sycamore Limited | Private company limited by shares | Live |
| SYCAMORE AGENCIES LIMITED | Private company limited by shares | Dissolved |
| SYCAMORE CAPITAL (CHINA) LIMITED | Private company limited by shares | Live |
| SYCAMORE DYNAMIC LIMITED | Private company limited by shares | Live |
| SYCAMORE ESTATES LIMITED | Private company limited by shares | Dissolved |
| SYCAMORE ASIA PACIFIC INVESTMENT GROUP LIMITED | | Live |
| SYCAMORE INVESTMENTS LIMITED | Private company limited by shares | Live |
| SYCAMORE STEAMSHIP COMPANY LIMITED | Private company limited by shares | Dissolved |
| SYCAMORE TRADE LIMITED | Private company limited by shares | Live |
| SYCB Limited | Private company limited by shares | Live |
| Sycda Company Limited | Private company limited by shares | Live |
| SYCEE LIMITED | Private company limited by shares | Live |
| SYCEE HK LIMITED | Private company limited by shares | Live |
| SYCEE INVESTMENT LIMITED | Private company limited by shares | Live |
| Sycees Company Limited | Private company limited by shares | Dissolved |
| SYCHO & SON FINE ART COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sychw Technology Co., Limited | | Live |
| SYCIS LIMITED | Private company limited by shares | Dissolved |
| Syclarion Holding Company Limited | Private company limited by shares | Live |
| Syclone Technologies Co., Limited | Private company limited by shares | Live |
| SYCMS Limited | | Live |
| SYCO TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SYCOMORE LIMITED | Private company limited by shares | Live |
| SYCOMORE SOLUTION LIMITED | Private company limited by shares | Live |
| SYCON DIGITAL CO., LIMITED | Private company limited by shares | Dissolved |
| SYCON TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SYCRESTWORLD LIMITED | Private company limited by shares | Live |
| SYCSI GROUP LIMITED | Private company limited by shares | Live |
| SYDA GROUP LIMITED | Private company limited by shares | Live |
| SYDA FOUNDATION HONG KONG LIMITED | Company limited by guarantee | Live |
| SYDA INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SYDA TRADING LIMITED | | Live |
| Hongkong Sydar International Technology Co., Limited | Private company limited by shares | Live |
| SYDBRIDGE LIMITED | Private company limited by shares | Live |
| Sydburg Limited | Private company limited by shares | Live |
| SYDD TRADE LIMITED | Private company limited by shares | Live |
| SY.DE.CO HK LIMITED | Private company limited by shares | Dissolved |
| FRANCE SYDENA (H.K.) INTERNATIONAL GARMENT LIMITED | Private company limited by shares | Dissolved |