| PETROCHINA INTERNATIONAL (CHINA) LIMITED | Private company limited by shares | Live |
| PETROCHINA (INT'L) SHARES CO., LIMITED | Private company limited by shares | Dissolved |
| PetroChina Yihi Energy (Hong Kong) Limited | Private company limited by shares | Live |
| PETROCHINA GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| PETROCHINA (HK) IMP & EXP LIMITED | Private company limited by shares | Live |
| PetroChina Investment (Hong Kong) Limited | Private company limited by shares | Live |
| PetroChina Hong Kong Limited | Private company limited by shares | Live |
| PETROCHINA INTERNATIONAL (HONG KONG) CORPORATION LIMITED | Private company limited by shares | Live |
| PetroChina Win Pacific (Hong Kong) Limited | Private company limited by shares | Live |
| PetroChina International Informatization Limited | Private company limited by shares | Live |
| PETROCHINA INSTAG PETROLEUM CO., LIMITED | Private company limited by shares | Live |
| PetroChina JinDiHeng Group (HK) Limited | Private company limited by shares | Dissolved |
| PETROCHINA KUNLUN LUBRICATING OIL CO., LIMITED | Private company limited by shares | Live |
| PETROCHINA KUNLUN LUBRICATION OIL SHARES CO., LIMITED | Private company limited by shares | Live |
| YP PETROCHINA MATERIAL LIMITED | Private company limited by shares | Dissolved |
| PETROCHINA DAQING OILFIELD (HK) COMPANY LIMITED | Private company limited by shares | Live |
| PetroChina Investment Overseas (Middle East) Limited | Private company limited by shares | Live |
| PetroChina Investment Overseas Limited | Private company limited by shares | Live |
| PETROCHINA PETROCHANGDA INVESTMENT HOLDING (H.K.) LIMITED | Private company limited by shares | Dissolved |
| PetroChina Investment Qatar Block 4, Limited | Private company limited by shares | Live |
| PETROCHINA NORTH TRADING LIMITED | Private company limited by shares | Live |
| PETROCHINA TWINSTAR BIO-DIESEL COMPANY LIMITED | Private company limited by shares | Dissolved |