| ISTAR GROUP LIMITED | Private company limited by shares | Live |
| I-STAR ENTERTAINMENT GROUP LIMITED | Private company limited by shares | Live |
| ISTAR TECH (HK) CO., LIMITED | Private company limited by shares | Live |
| IStar (HK) Technology Limited | Private company limited by shares | Dissolved |
| ISTAR HOLDING LIMITED | Private company limited by shares | Live |
| ISTAR (HONG KONG) CO., LIMITED | Private company limited by shares | Dissolved |
| I-STAR ENTERPRISE (HONG KONG) LIMITED | Private company limited by shares | Live |
| ISTAR TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Hongkong Istar Film Media Co., Limited | Private company limited by shares | Live |
| HongKong I-Star International Co., Limited | Private company limited by shares | Live |
| ZHEJIANG ISTAR IMPORT AND EXPORT CO., LIMITED | | Live |
| I-STAR INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Istar International Limited | Private company limited by shares | Live |
| iSTAR International Wealth Management Co. Limited | Private company limited by shares | Live |
| Istar International Trading Limited | Private company limited by shares | Live |
| I-STAR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| I-STAR TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| i-starlet Limited | Private company limited by shares | Dissolved |
| ISTARNET.NET LIMITED | Private company limited by shares | Dissolved |
| ISTARON LIMITED | Private company limited by shares | Live |
| iStarPicks Limited | Private company limited by shares | Live |
| iSTARS Capital Limited | Private company limited by shares | Live |
| I-START CREATIVE LIMITED | Private company limited by shares | Live |
| iStart Venture Limited | Private company limited by shares | Live |
| iStar-up Limited | Private company limited by shares | Live |
| ISTARVISION CO., LIMITED | Private company limited by shares | Live |
| Istarway Travel Limited | Private company limited by shares | Live |
| I-STATE LIMITED | Private company limited by shares | Live |
| i-Station Co. Limited | Private company limited by shares | Dissolved |
| ISTC LIMITED | Private company limited by shares | Dissolved |
| ISTC Limited | Private company limited by shares | Live |
| ISTC TERPRISES LIMITED | | Live |
| iSteady Technology (HongKong) Limited | Private company limited by shares | Live |
| Istech Limited | Private company limited by shares | Live |
| I-STEED CREATIVE LIMITED | Private company limited by shares | Live |
| I-STEED CAPITAL GROUP LIMITED | Private company limited by shares | Live |
| I-steel Constructure Engeneering Co., Limited | Private company limited by shares | Live |
| Isteel Hongkong Co., Limited | Private company limited by shares | Live |
| FUAN ISTEEL IMPORT & EXPORT CO., LIMITED | Private company limited by shares | Live |
| isteel Industries Limited | | Live |
| iSTELL LIMITED | Private company limited by shares | Live |
| iStellar Company Limited | | Live |
| CABLE ISTELLATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| iSTEM Limited | Private company limited by shares | Live |
| iSTEM Education Limited | Private company limited by shares | Live |
| I-STEP LIMITED | Private company limited by shares | Dissolved |
| ISTER LIMITED | Private company limited by shares | Dissolved |
| ISTERNO LIMITED | | Live |
| ISTESMAR ASIA LIMITED | Private company limited by shares | Live |
| Istetic Group Limited | Private company limited by shares | Live |
| ISTEX LIMITED | Private company limited by shares | Dissolved |
| ISTHMUS LIMITED | Private company limited by shares | Live |
| ISTHMUS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ISTIMEWA LIMITED | Private company limited by shares | Dissolved |
| ISTIRNA LIMITED | Private company limited by shares | Live |
| Istlux Limited | Private company limited by shares | Live |
| ISTM Limited | Private company limited by shares | Live |
| Ist-Mein-Auto Limited | Private company limited by shares | Live |
| iStock Limited | Private company limited by shares | Live |
| i-Stock Finance Limited | Private company limited by shares | Dissolved |
| iStock Group Limited | Private company limited by shares | Live |
| ISTOCK21 LIMITED | Private company limited by shares | Dissolved |
| SVIATYE ISTOKI LIMITED | Private company limited by shares | Live |
| ISTON CONSULTANCY LIMITED | Private company limited by shares | Live |
| Iston Security Trading Company Limited | Private company limited by shares | Live |
| ISTONE LIMITED | | Live |
| ISTOP CONCEPTS LIMITED | Private company limited by shares | Live |
| i-Storage Limited | Private company limited by shares | Live |
| HONG KONG ISTORAGE LIMITED | Private company limited by shares | Dissolved |
| i-Store Express Limited | Private company limited by shares | Live |
| i-Store Global Limited | Private company limited by shares | Live |
| I-STORE HOLDING LIMITED | Private company limited by shares | Live |
| ISTORE TRADING COMPANY LIMITED | Private company limited by shares | Live |
| Istorist Limited | | Live |
| ISTORM NETWORK CO., LIMITED | Private company limited by shares | Live |
| ISTORM TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ISTORY LIMITED | Private company limited by shares | Live |
| ISTP LIMITED | Private company limited by shares | Live |
| i-Strategist Asia Limited | Private company limited by shares | Live |
| I-STRATEGY LIMITED | Private company limited by shares | Dissolved |
| i-Strategy Group Limited | Private company limited by shares | Dissolved |
| Istret Company Limited | Private company limited by shares | Live |
| ISTRIL LIMITED | Private company limited by shares | Live |
| iStrivers Software Limited | Private company limited by shares | Live |
| ISTS CO., LIMITED | Private company limited by shares | Live |
| I-STT MACAU LIMITED | Private company limited by shares | Dissolved |
| ISTUDIO LIMITED | Private company limited by shares | Live |
| I-STUDIO LIMITED | | Live |
| E-FFORT ISTUDIO LIMITED | Private company limited by shares | Dissolved |
| i-Studio Solutions Limited | Private company limited by shares | Live |
| iStudo Limited | Private company limited by shares | Live |
| iStudy Limited | Private company limited by shares | Live |
| ISTUDY EDUCATION GROUP LIMITED | Private company limited by shares | Live |
| iStudy Hub (Hong Kong) Company Limited | Private company limited by shares | Live |
| I-STUDY RESOURCES LIMITED | Private company limited by shares | Dissolved |
| i-Study-Online Company Limited | Private company limited by shares | Live |
| ISTUS LIMITED | Private company limited by shares | Live |
| IStyle Co., Limited | Private company limited by shares | Live |
| ISTYLE EXPORT&IMPORT CO., LIMITED | Private company limited by shares | Live |
| Istyle Furniture Co., Limited | Private company limited by shares | Live |