| I.S.I. Pacific Limited | Private company limited by shares | Live |
| ISIC LIMITED | Private company limited by shares | Dissolved |
| ISID CHINA LIMITED | Private company limited by shares | Live |
| ISID TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ISIDA LIMITED | | Live |
| isig Limited | Private company limited by shares | Dissolved |
| ISIGAMI ELECTRON (HK) LIMITED | Private company limited by shares | Dissolved |
| I-SIGHT LIMITED | Private company limited by shares | Live |
| ISIGNAGE LIMITED | Private company limited by shares | Live |
| ISIK Limited | Private company limited by shares | Live |
| ISIKMAN Limited | | Live |
| ISILK.COM LIMITED | Private company limited by shares | Dissolved |
| I-SILVER LIMITED | Private company limited by shares | Live |
| i-silver (HK) Limited | Private company limited by shares | Live |
| ISIM TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ISIMN CATERING LIMITED | | Live |
| ISIN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Isina Limited | Private company limited by shares | Live |
| I-SING LIMITED | Private company limited by shares | Live |
| iSino Company Limited | Private company limited by shares | Live |
| iSino.com Company Limited | Private company limited by shares | Live |
| ISINOLAW LIMITED | Private company limited by shares | Live |
| ISINOLAW HOLDING LIMITED | Private company limited by shares | Dissolved |
| I-SINONET.COM LIMITED | Private company limited by shares | Live |
| ISIO SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| ISIS LIMITED | Private company limited by shares | Dissolved |
| ISIS LIMITED | Private company limited by shares | Dissolved |
| ISIS (Asia) Limited | Private company limited by shares | Live |
| ISIS HOLDING LIMITED | Private company limited by shares | Dissolved |
| ISIS INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ISITE LIMITED | Private company limited by shares | Dissolved |
| I-SITE. HK LIMITED | Private company limited by shares | Live |
| ISIX LIMITED | Private company limited by shares | Dissolved |
| iSizzler Co., LIMITED | Private company limited by shares | Live |