| SHUOYOU HEALTHCARE INFORMATION SERVICE LIMITED | Private company limited by shares | Live |
| SICHUANG INFORMATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| SIDLINK INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK SIEMER INFORMATION ADVISORY LIMITED | Private company limited by shares | Live |
| SIENT Information Limited | Private company limited by shares | Live |
| GLOBAL SIGNAL INFORMATION SYSTEM HOLDING LIMITED | Private company limited by shares | Dissolved |
| Silverline Information Technology Co., Limited | | Live |
| BEST SINCERE INFORMATION LIMITED | Private company limited by shares | Live |
| SINCERE INFORMATION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINCERE INFORMATION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINCERE INFORMATION TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG SING DAK LEI INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINO HONG KONG INFORMATION LIMITED | Private company limited by shares | Dissolved |
| SINO-ASIA INFORMATION LIMITED | Private company limited by shares | Live Commenced dormancy on 04-Jul-2007 |
| SINODA INFORMATION LIMITED | Private company limited by shares | Dissolved |
| SINOSUN INFORMATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINOVIC INFORMATION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SIRIUS INFORMATION SYSTEMS (HK) LIMITED | Private company limited by shares | Dissolved |
| Skyland Information Consultants Limited | Private company limited by shares | Live |
| Skyline Business Information Consulting Co., Limited | Private company limited by shares | Live |
| SKYLINE INFORMATION (HK) CO., LIMITED | Private company limited by shares | Live |
| SKYLINE INFORMATION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SKYLINE INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SKYNET INFORMATION LIMITED | Private company limited by shares | Dissolved |
| SKYNET INFORMATION LIMITED | Private company limited by shares | Dissolved |
| Smart Information eXchange Limited | | Live |
| SMARTEYE INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SMARTLINK INFORMATION LIMITED | Private company limited by shares | Live |
| snail Information Trade Limited | Private company limited by shares | Live |
| SOCCER INFORMATION LIMITED | Private company limited by shares | Dissolved |
| INFORMATION OF SOCCER BASE LIMITED | Private company limited by shares | Dissolved |
| Time Pilot Software Information Technology Limited | Private company limited by shares | Dissolved |
| Solflink Information Limited | Private company limited by shares | Dissolved |
| Solong Caihua Information Consulting Service Co., Limited | | Live |
| SOLOW MARKET INFORMATION (HK) LIMITED | Private company limited by shares | Live |
| KOON WING INFORMATION SOLUTION LIMITED | Private company limited by shares | Live |
| INFORMATION SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| MTR Information Solutions Company Limited | Private company limited by shares | Live Ceased dormancy on 03-Oct-2008 |
| Bright-Tech Information And Communication Solutions Limited | Private company limited by shares | Live |
| INNOVATIVE INFORMATION SOLUTIONS LIMITED | Private company limited by shares | Live |
| NEW INFORMATION SOLUTIONS (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| SONICA INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SOPHOE INFORMATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sopp Information Technology Limited | Private company limited by shares | Live |
| SOULGAME INFORMATION CO., LIMITED | Private company limited by shares | Live |
| SOURCING INFORMATION MANAGEMENT CONSULTING CO., LIMITED | Private company limited by shares | Live |
| SOUTHCHINA INFORMATION LIMITED | Private company limited by shares | Dissolved |
| SPEEDFAX INFORMATION LIMITED | Private company limited by shares | Dissolved |
| HK SpeedFish Information Technology Co., Limited | Private company limited by shares | Live |
| DIGITAL SPORTS INFORMATION CENTRE LIMITED | Private company limited by shares | Dissolved |
| STAK NETWORK & INFORMATION LIMITED | Private company limited by shares | Dissolved |
| STANDARD INFORMATION LIMITED | Private company limited by shares | Dissolved |
| STANDARD INFORMATION COMPANY LIMITED | Private company limited by shares | Live |
| Standard Information Limited | | Live |
| STAR BOX INFORMATION CENTRE LIMITED | Private company limited by shares | Dissolved |
| STARAY INFORMATION LIMITED | Private company limited by shares | Dissolved |
| STARCLOUD INFORMATION LIMITED | Private company limited by shares | Live |
| StarHub Information Co., Limited | | Live |
| H.M. STARR INFORMATION AND CONSULTANCY LIMITED | Private company limited by shares | Live |
| STARTCOM INFORMATION AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CHINA ENTERPRISE INFORMATION STATISTICS CENTER CO., LIMITED | Private company limited by shares | Live |
| Magic Stone Hong Kong Information Co., Limited | | Live |
| RBC STRATEGIC INFORMATION LIMITED | Private company limited by shares | Dissolved |
| CHINA ENTERPRISE INFORMATION STRATEGY CONSORTIUM LIMITED | Private company limited by shares | Live |
| Strato Information & Technology Co., Limited | Private company limited by shares | Live |
| STRONG INFORMATION CONSULTANT LIMITED | Private company limited by shares | Live |
| STRONG INFORMATION CORPORATION LIMITED | Private company limited by shares | Live |
| CHINA STUDY INFORMATION CO., LIMITED | Private company limited by shares | Dissolved |
| SUIJIN PRAISED INTERNATIONAL MEDIA NETWORK INFORMATION LIMITED | Private company limited by shares | Dissolved |
| Suiyu Information Technology Limited | | Live |
| Sunbridge Information Technology Engineering (HongKong) Co., Limited | Private company limited by shares | Live |
| SUNLAND INFORMATION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HK Sunnycloud Information Technology Co., Limited | Private company limited by shares | Live |
| SUNRILL INFORMATION LIMITED | Private company limited by shares | Live |
| HK SUNRISE INFORMATION LIMITED | Private company limited by shares | Live |
| SUNSHINE INFORMATION CO., LIMITED | Private company limited by shares | Dissolved |
| SUNSHINE HEALTH INFORMATION COMPANY LIMITED | Private company limited by shares | Live |
| SUNSHINE INFORMATION TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUNSHINE INFORMATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SUNTEAM INFORMATION TECHNOLOGY LIMITED | | Live |
| Sunton Information Technology Co., Limited | Private company limited by shares | Live |
| SUPER INFORMATION LIMITED | Private company limited by shares | Dissolved |
| DIGITAL INFORMATION SUPER HIGHWAY, LIMITED | Private company limited by shares | Dissolved |
| INFORMATION SUPER HIGHWAY H.K. LIMITED | Private company limited by shares | Dissolved |
| SUPERNOVA MORTGAGE INFORMATION SERVICE LIMITED | Private company limited by shares | Live |
| Superory Information Consultant Co., Limited | | Live |
| WS BUSINESS INFORMATION SUPPORT LIMITED | Private company limited by shares | Live |
| MARINE INFORMATION SUPPORT AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SUPREME INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HK SWIFT INFORMATION AND CONSULTANCY CO. LIMITED | Private company limited by shares | Dissolved |
| SYNFAITH INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SYSLIVE INFORMATION LIMITED | Private company limited by shares | Live |
| HAN INFORMATION SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| H. S. INFORMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BFG INFORMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SET INFORMATION SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ACCURACY INFORMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BoardWare Information System Limited | Private company limited by shares | Live |
| CHAMPS INFORMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| COASTAL INFORMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |