| NOTION LIMITED | Private company limited by shares | Live |
| SKY NOTION LIMITED | Private company limited by shares | Live |
| NEW NOTION LIMITED | Private company limited by shares | Live |
| NEW NOTION ASIA LIMITED | Private company limited by shares | Live |
| BEST NOTION LIMITED | Private company limited by shares | Live |
| Exquisite Notion Limited | Private company limited by shares | Live |
| NOTION FITNESS LIMITED | | Live |
| NOTION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NATURE & NOTION LIMITED | Private company limited by shares | Dissolved |
| POLY NOTION LIMITED | Private company limited by shares | Live |
| RICH NOTION LIMITED | Private company limited by shares | Live |
| NOTIONAGE TECHNOLOGY (HONG KONG) CO., LIMITED | | Live |
| Notione Technology Limited | | Live |
| NotionSpace Limited | Private company limited by shares | Live |