| IDEO COMPANY LIMITED | Private company limited by shares | Dissolved |
| IDEO CONCEPTS COMPANY LIMITED | Private company limited by shares | Live |
| IDEO Design Limited | Private company limited by shares | Live |
| Kitchen Ideo Company Limited | Private company limited by shares | Live |
| IDEO SOLUTIONS LIMITED | Private company limited by shares | Live |
| I-deo Healthcare Solutions Limited | Private company limited by shares | Dissolved |
| Ideo Tech Atelier Limited | | Live |
| Ideoasis Limited | Private company limited by shares | Dissolved |
| IDEOGRAMS LIMITED | Private company limited by shares | Live |
| IDEOGRAPH LIMITED | Private company limited by shares | Live |
| IDEology HK Limited | Private company limited by shares | Live |
| IDEOLOGY ADVERTISING AGENCY LIMITED | Private company limited by shares | Live |
| IDEOLOGY ARTISTE MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| IDEOLOGY (GROUP) PLAN AND MANAGEMENT CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| IDEOLOGY ESSENCE HOLDING LIMITED | Private company limited by shares | Live |
| IDEOLOGY PUBLIC FOUNDATION LIMITED | Private company limited by shares | Live |
| HK IDEOLOGY GROUP LIMITED | Private company limited by shares | Dissolved |
| IDEOLOGY HOLDINGS LIMITED | Private company limited by shares | Live |
| International Ideology and Culture Think-Tank Limited -The- | Private company limited by shares | Live |
| CREATIVE IDEOLOGY MARKETING COMPANY LIMITED | Private company limited by shares | Live |
| OPERATING IDEOLOGY LIMITED | Private company limited by shares | Live |
| CREATIVE IDEOLOGY PROPERTY AGENCY LIMITED | Private company limited by shares | Live |
| IDEON LIMITED | Private company limited by shares | Live |
| IDEONYX LIMITED | Private company limited by shares | Dissolved |
| IDEO-VISUAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| IDEO-VISUAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |