| WART ESPIRITU SACRUM LIMITED | Private company limited by shares | Dissolved |
| WARTA LIMITED | Private company limited by shares | Dissolved |
| WARTBURG LIMITED | Private company limited by shares | Dissolved |
| WARTEX TRADE LIMITED | Private company limited by shares | Dissolved |
| Wartfila Machinery Service (Hongkong) Co., Limited | Private company limited by shares | Live |
| WARTFORD INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| WARTI COMPANY LIMITED | Private company limited by shares | Dissolved |
| WARTINGER LIMITED | Private company limited by shares | Dissolved |
| WARTO LIMITED | Private company limited by shares | Dissolved |
| WARTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| WARTON LIMITED | Private company limited by shares | Live |