| ONKINS & ASSOCIATE LIMITED | Private company limited by shares | Dissolved |
| ONKIT INC LIMITED | Private company limited by shares | Live |
| ONKIT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ONKO LIMITED | Private company limited by shares | Dissolved |
| ONKOD ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| ONKOK LIMITED | Private company limited by shares | Dissolved |
| ONKOK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Onkon Group Limited | Private company limited by shares | Live |
| TOKYO ONKYO LIMITED | Private company limited by shares | Live |
| ONLAN CAPITAL LIMITED | Private company limited by shares | Live |
| ONLAND INC LIMITED | Private company limited by shares | Live |
| ONLAND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ONLANE LIMITED | Private company limited by shares | Dissolved |
| ONLARICH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONLAWIN INVESTMENT LIMITED | Private company limited by shares | Live |
| ONLEAD LIMITED | Private company limited by shares | Dissolved |
| ONLEAD INC LIMITED | Private company limited by shares | Live |
| ON-LEISURE LIMITED | Private company limited by shares | Dissolved |
| ONLEN LIMITED | Private company limited by shares | Dissolved |
| ONLET LIMITED | Private company limited by shares | Live |
| ONLEVEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONLEVER TECH LIMITED | Private company limited by shares | Live |
| ONLEX LIMITED | Private company limited by shares | Live |
| ONLEY LIMITED | Private company limited by shares | Dissolved |
| ONLEY BO INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONLI INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| ONLICARD HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ONLIEST LIMITED | Private company limited by shares | Live |
| ONLIGHT LIMITED | Private company limited by shares | Dissolved |
| Onlight EEC Limited | Private company limited by shares | Live |
| HK ONLIKE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| EGG ONLINE LIMITED | Private company limited by shares | Live |
| AD ONLINE LIMITED | Private company limited by shares | Dissolved |
| ONLINE LIMITED | Private company limited by shares | Live |
| MPF ONLINE LIMITED | Private company limited by shares | Dissolved |
| TV ONLINE LIMITED | Private company limited by shares | Dissolved |
| PA ONLINE LIMITED | Private company limited by shares | Dissolved |
| EDW ONLINE LIMITED | Private company limited by shares | Live |
| WIZ ONLINE LIMITED | Private company limited by shares | Dissolved |
| OA ONLINE COMPANY LIMITED | Private company limited by shares | Dissolved |
| PC ONLINE LIMITED | Private company limited by shares | Live |
| MCF (Online) Limited | Private company limited by shares | Live |
| PIT ONLINE LIMITED | Private company limited by shares | Dissolved |
| OEM Online Company Limited | Private company limited by shares | Dissolved |
| SNA ONLINE LIMITED | Private company limited by shares | Dissolved |
| ABM ONLINE LIMITED | Private company limited by shares | Dissolved |
| GO ONLINE LIMITED | Private company limited by shares | Live |
| CLL ONLINE CO. LIMITED | Private company limited by shares | Dissolved |
| Ark Online Limited | Private company limited by shares | Dissolved |
| PAY ONLINE LIMITED | Private company limited by shares | Live |
| MF ONLINE LIMITED | Private company limited by shares | Dissolved |
| SUN ONLINE LIMITED | Private company limited by shares | Live |
| PM ONLINE LIMITED | Private company limited by shares | Dissolved |
| PET GO ONLINE LIMITED | Private company limited by shares | Live Commenced dormancy on 11-Aug-2015 |
| SME Online Limited | Private company limited by shares | Live |
| AS Online Limited | Private company limited by shares | Dissolved |
| Box Online Limited | Private company limited by shares | Live |
| PAD ONLINE LIMITED | Private company limited by shares | Dissolved |
| AGU ONLINE LIMITED | Private company limited by shares | Live |
| IT ONLINE LIMITED | Private company limited by shares | Live |
| UP ONLINE LIMITED | Private company limited by shares | Live |
| J&L Online Limited | Private company limited by shares | Live |
| GTS ONLINE HK LIMITED | Private company limited by shares | Live |
| VIP Online Limited | Private company limited by shares | Live |
| FCI ONLINE LIMITED | Private company limited by shares | Live |
| SG ON-LINE LIMITED | Private company limited by shares | Live |
| CPC ONLINE LIMITED | Private company limited by shares | Live |
| CAR ONLINE LIMITED | Private company limited by shares | Live |
| 365 ONLINE LIMITED | Private company limited by shares | Live |
| JT Online Company Limited | Private company limited by shares | Live |
| BBD ONLINE LIMITED | Private company limited by shares | Live |
| GC ONLINE LIMITED | Private company limited by shares | Live |
| ST Online Limited | Private company limited by shares | Live |
| Why Not Online Limited | Private company limited by shares | Live |
| T Online Limited | Private company limited by shares | Live |
| V Online Limited | Private company limited by shares | Live |
| KIN online Limited | Private company limited by shares | Live |
| YC Online Limited | Private company limited by shares | Live |
| Sun Online TV Limited | Private company limited by shares | Live |
| ONLINE INC LIMITED | Private company limited by shares | Live |
| JYC Online Limited | Private company limited by shares | Live |
| AI ONLINE LIMITED | Private company limited by shares | Live |
| BLF ONLINE LIMITED | Private company limited by shares | Live |
| HKJ ONLINE LIMITED | Private company limited by shares | Live |
| PCB ONLINE LIMITED | Private company limited by shares | Live |
| G2J ONLINE LIMITED | Private company limited by shares | Live |
| AI Online Limited | Private company limited by shares | Live |
| PhD Online Limited | Private company limited by shares | Live |
| Be Online Limited | Private company limited by shares | Live |
| PI ONLINE LIMITED | Private company limited by shares | Live |
| ARP Online Limited | Private company limited by shares | Live |
| CR Online Limited | | Live |
| 852 Online Limited | | Live |
| RB Online Limited | | Live |
| ONLINE LIMITED | | Live |
| Joy Online Limited | | Live |
| I J Online Limited | | Live |
| Standard Online Advertising Company Limited | Private company limited by shares | Live |
| Ahjeng's Online Limited | Private company limited by shares | Live |
| APSM ONLINE LIMITED | Private company limited by shares | Dissolved |