| Second Frog Limited | Private company limited by shares | Live |
| Shenzhen Gold Phoenix Second Furniture Company., Limited | Private company limited by shares | Live |
| Second Half Glory Limited | Private company limited by shares | Live |
| Second Group Limited | Private company limited by shares | Live |
| SECOND PAGE CATERING GROUP LIMITED | Private company limited by shares | Live |
| SECOND HARVEST CONSULTING ASIA LIMITED | Private company limited by shares | Live |
| One Minute One Second (Hong Kong) Limited | Private company limited by shares | Live |
| SECOND IMAGE TEXTILES LIMITED | Private company limited by shares | Dissolved |
| TIMES INVESTMENT SECOND LIMITED | Private company limited by shares | Live |
| SECOND JEWELRY LIMITED | Private company limited by shares | Live |
| SECOND KILL LIMITED | Private company limited by shares | Live |
| SECOND LIFE LIMITED | Private company limited by shares | Live |
| SECOND LIFE-SCIENCES COMPANY LIMITED | Private company limited by shares | Live |
| SECOND LINE LIMITED -THE- | Private company limited by shares | Dissolved |
| SECOND LINE LIMITED -THE- | Private company limited by shares | Dissolved |
| Second Link Asia Company Limited | Private company limited by shares | Live |
| SECOND HAND MALL LIMITED | Private company limited by shares | Live |
| SECOND MILLION ASSETS LIMITED | Private company limited by shares | Live |
| Second Mind Limited | Private company limited by shares | Live |
| Ye Second Floor Rear Music Company Limited | Private company limited by shares | Live |
| NEVER SECOND COMPANY, LIMITED | Private company limited by shares | Live |
| NEVER SECOND ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Never Second (Holding) Co. Limited | Private company limited by shares | Live |
| NEVER SECOND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SECOND NURTURE LIMITED | Private company limited by shares | Dissolved |
| PT. Second Best Packing Limited | Private company limited by shares | Live |
| YIBO PARKING SECOND HOLDING LIMITED | Private company limited by shares | Dissolved |
| SECOND BITE PATISSERIE LIMITED | Private company limited by shares | Live |
| MAKONG PROPERTY SECOND LIMITED | Private company limited by shares | Live |
| SECOND REACH LIMITED | Private company limited by shares | Live |
| READY-TO-WEAR CENTRE (SECOND FACTORY) LIMITED | Private company limited by shares | Dissolved |
| SECOND ROUND LIMITED | | Live |
| Second Sense Limited | Private company limited by shares | Live |
| Second Skyrise Limited | Private company limited by shares | Live |
| Second Skin Solutions Limited | | Live |
| Speed Second Hand Limited | | Live |
| SPLIT SECOND LIMITED | Private company limited by shares | Live |
| SECOND STAGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Second Star Company Limited | | Live |
| Second State Company Limited | Private company limited by shares | Live |
| SECOND STEP LIMITED | Private company limited by shares | Dissolved |
| Second Step Capital Limited | Private company limited by shares | Live |
| SECOND STRENGTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Studio at Second Limited | Private company limited by shares | Live |
| SECOND SUNSHINE COMPANY LIMITED | Private company limited by shares | Live |
| Second Space Tech Limited | Private company limited by shares | Live |
| BT SECOND TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| SECOND LIFE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Second Thousand Thousand Limited | Private company limited by shares | Live |
| No Second Choice Trading Limited | | Live |
| PRESERVED EGG SECOND TRADING LIMITED | Private company limited by shares | Live |
| Second Life Translations Limited | | Live |
| WAI TUNG SECOND DENTAL LIMITED | | Live |
| WAI TUNG SECOND MEDICAL LIMITED | | Live |
| SECOND UNITED LIMITED | Private company limited by shares | Dissolved |
| NEW AND SECOND WATCHES LIMITED | Private company limited by shares | Dissolved |
| Second Wave Limited | Private company limited by shares | Live |
| SECOND WIND COMPANY LIMITED | Private company limited by shares | Dissolved |
| Harbin Wind Second Investment Limited | Private company limited by shares | Live |
| SECOND WINGS LIMITED | Private company limited by shares | Dissolved |
| SECONDA LIMITED | Private company limited by shares | Live |
| WONG SHIU CHI SECONDARY SCHOOL | Company limited by guarantee | Live |
| SECONDAUGGHTEROMANCE Limited | | Live |
| Second-Brain Technology Limited | | Live |
| SECONDEARN DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SecondMarket Asia Limited | Private company limited by shares | Dissolved |
| SECONDMENT LIMITED | Private company limited by shares | Live |
| Secondnatvre Limited | | Live |
| SecondOfMay Limited | Private company limited by shares | Live |
| SECONDOOR LIMITED | Private company limited by shares | Dissolved |
| SECONDOPINION.COM LIMITED | Private company limited by shares | Dissolved |
| 5 SECONDS LIMITED | Private company limited by shares | Live |
| 3 Seconds Limited | | Live |
| THIRTY SECONDS FILM COMPANY LIMITED | Private company limited by shares | Live |
| Ten Seconds Digital Technology (HONGKONG) Co., Limited | Private company limited by shares | Live |
| LIGHT SECONDS TECHNOLOGY (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| Thirty Seconds Online Shopping Mall HK Limited | | Live |
| MINING SECONDS LIMITED | Private company limited by shares | Live |
| Counting Seconds Mobile Limited | Private company limited by shares | Live |
| NINE SECONDS NINE COMPANY LIMITED | | Live |
| HK SECONDS PAYING TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Three Seconds Trading Limited | Private company limited by shares | Live |
| Twenty Seconds Restaurant Limited | Private company limited by shares | Live |
| Twenty Seconds Workshop Limited | Private company limited by shares | Live |
| Five Seconds Worldwide Limited | Private company limited by shares | Live |
| SecondsGold Trading Limited | Private company limited by shares | Live |
| SECONDUS NOMINEES LIMITED | Private company limited by shares | Live |
| SECONDVIEW MARKET LIMITED | Private company limited by shares | Live |
| SECONEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| SECONOM LIMITED | Private company limited by shares | Live |
| SECOPE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| U.S. SECOR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SECORE LIMITED | Private company limited by shares | Dissolved |
| SECOREN LIMITED | Private company limited by shares | Live |
| T & T SECORP LIMITED | Private company limited by shares | Live |
| SECORPINC HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SECOSY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SECOTA & COMPANY LIMITED | Private company limited by shares | Live |
| SECOTEC LIMITED | Private company limited by shares | Live |
| SECOTRADE 61 PTY LIMITED | Private company limited by shares | Live |