| TREASURE ISLANDS UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| ISLANDS WIDE LIMITED | Private company limited by shares | Live |
| ISLANDS WIDE LIMITED | Private company limited by shares | Live |
| Tri Islands-Gourmet Limited | Private company limited by shares | Live |
| ISLANDVEST COMPANY LIMITED | Private company limited by shares | Dissolved |
| ISLANDWIDE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ISLANDWIDE SELECTIONS LIMITED | Private company limited by shares | Live |
| iSlash Limited | Private company limited by shares | Live |
| ISLAY LIMITED | Private company limited by shares | Live |
| Islay Whisky Experience Limited | | Live |
| Islay Spirits Limited | Private company limited by shares | Live |
| ISL.CRESCERE CO LIMITED | Private company limited by shares | Live |
| DRAGON ISLE LIMITED | | Live |
| EMERALD ISLE LIMITED | Private company limited by shares | Live |
| HARBOUR ISLE LIMITED | Private company limited by shares | Dissolved |
| MID ISLE PUBLICATIONS LIMITED | Private company limited by shares | Live |
| Isle of South Company Limited | Private company limited by shares | Live |
| ISLECO LIMITED | Private company limited by shares | Live |
| ISLEDON LIMITED | Private company limited by shares | Dissolved |
| ISLEHAM ENTERPRISES LIMITED | Private company limited by shares | Live |
| ISLER LIMITED | Private company limited by shares | Dissolved |
| Isler & Company Limited | | Live |
| Emerald Isles Company Limited | Private company limited by shares | Live |
| ISLETON LIMITED | Private company limited by shares | Dissolved |
| Islet-Studio Limited | | Live |
| ISLI & MPR International Foundation Limited | Private company limited by shares | Live |
| ISLINGFORD LIMITED | Private company limited by shares | Live |
| ISLINGSON COMPANY LIMITED | Private company limited by shares | Dissolved |
| ISLINGTON LIMITED | Private company limited by shares | Dissolved |
| ISLINGTON ASIA LIMITED | Private company limited by shares | Live |
| ISLINGTON ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ISLION CHINA LIMITED | Private company limited by shares | Dissolved |
| ISLNET SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| ISLORN COMPANY LIMITED | Private company limited by shares | Live |
| Islov Pets Company Limited | | Live |
| ISLT LIMITED | Private company limited by shares | Live |
| ISM2D LIMITED | Private company limited by shares | Live |
| CHINA IS-MAC MACHINERY COMPANY LIMITED | Private company limited by shares | Live |
| Ismaeelchina Manufacturing Limited | Private company limited by shares | Live |
| ISMAN LIMITED | Private company limited by shares | Live |
| iSmark Learning Hall Company Limited | | Live |
| ISMarketing Limited | | Live |
| I-SMART LIMITED | Private company limited by shares | Live |
| KS iSmart Limited | Private company limited by shares | Live |
| I-SMART INC LIMITED | Private company limited by shares | Live |
| iSMART SRO LIMITED | Private company limited by shares | Live |
| ISMART ALLIANCE LIMITED | Private company limited by shares | Dissolved |
| I-SMART ASIA LIMITED | Private company limited by shares | Dissolved |
| I-SMART ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| ISMART OUTDOORS CO., LIMITED | Private company limited by shares | Live |
| iSmart Creation Limited | Private company limited by shares | Live |
| I-SMART DEVELOP LIMITED | Private company limited by shares | Dissolved |
| I-Smart Education Limited | Private company limited by shares | Live |
| ISMART ENGINEERING LIMITED | Private company limited by shares | Live |
| ISMART ENTERPRISES LIMITED | Private company limited by shares | Live |
| iSMART FUTURE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Ismart Global Trading Limited | | Live |
| ISMART GROUP LIMITED | Private company limited by shares | Live |
| ISMART INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| iSmart Learning Limited | Private company limited by shares | Live |
| ISMART MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| iSmart Outdoor Advertising Limited | Private company limited by shares | Live |
| ISMART OVERSEAS LIMITED | Private company limited by shares | Live |
| I-SMART PRODUCTION LIMITED | | Live |
| ISMART SOLUTION LIMITED | Private company limited by shares | Live |
| iSmart Business Solution Limited | Private company limited by shares | Dissolved |
| iSmart Solutions Limited | Private company limited by shares | Live |
| I-SMART SYSTEM LIMITED | Private company limited by shares | Dissolved |
| I.SMART TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ISMART TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ISMARTA LIMITED | Private company limited by shares | Live |
| ISMARTCLUB.COM LIMITED | Private company limited by shares | Dissolved |
| iSmartCorp Limited | Private company limited by shares | Live |
| ISMARTDIGI LIMITED | Private company limited by shares | Live |
| i-smartech Limited | Private company limited by shares | Live |
| ismartek Co., Limited | Private company limited by shares | Live |
| ISMARTEK TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ISMARTER TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| iSmartInfo Technology Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG ISMARTS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ISMARTSEARCH TELECOMMUNICATIONS LIMITED | Private company limited by shares | Live |
| iSMART-Trend INTELLIGENT LIMITED | Private company limited by shares | Live |
| ISMATIC COMPANY LIMITED | Private company limited by shares | Live |
| ISMECA ASIA, LIMITED | Private company limited by shares | Dissolved |
| ISMEI LIMITED | Private company limited by shares | Dissolved |
| HK ISMILE CO., LIMITED | Private company limited by shares | Live |
| ISMILE COSMETICS LIMITED | Private company limited by shares | Live |
| iSmile Dental Care Limited | Private company limited by shares | Live |
| iSmile Design Limited | Private company limited by shares | Live |
| I-SMILE (HK) ELECTRONICS LIMITED | Private company limited by shares | Live |
| ISMILE (HK) LIMITED | Private company limited by shares | Live |
| i-Smile International Limited | | Live |
| Ismile Technology Co., Limited | Private company limited by shares | Live |
| SHENZHEN ISMILE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ISMINVEST INT LIMITED | Private company limited by shares | Dissolved |
| ISMK TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| ISML Limited | Private company limited by shares | Live |
| ISMOKE LIMITED | Private company limited by shares | Live |
| Ismole Company LIMITED | Private company limited by shares | Live |
| ISMOOER LIMITED | Private company limited by shares | Live |