| CNPC R&D Company Limited | | Live |
| Progreso CNPC (China) Investment Limited | Private company limited by shares | Live |
| CNPC POWDER GROUP CO., LIMITED | Private company limited by shares | Live |
| CNPC CAPITAL (HK) LIMITED | Private company limited by shares | Live |
| CNPC FINANCE (HK) LIMITED | Public company limited by shares | Live |
| C.N.P.C. (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| CNPC HONG KONG (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| MC & CNPC OIL (HONG KONG) LIMITED | Private company limited by shares | Live |
| CNPC International (Hong Kong) Limited | Private company limited by shares | Live |
| CNPC International Trade Group Hongkong Limited | Private company limited by shares | Live |
| CNPC INTERNATIONAL KAZAKHSTAN TRADING (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CNPC KUNLUN INT'L (HONG KONG) LIMITED | Private company limited by shares | Live |
| CNPC Kunlun Gas Utilization (Hong Kong) Company Limited | Private company limited by shares | Dissolved |
| HONG KONG CNPC MASTERY OIL LIMITED | Private company limited by shares | Dissolved |
| CNPC Overseas Asset Management Limited | | Live |
| CNPC TONG DA PETROLEUM COMPANY LIMITED | Private company limited by shares | Live |
| CNPC Services & Engineering Limited | Private company limited by shares | Live |
| CNPC XING DE ENERGY SHARE LIMITED | Private company limited by shares | Live |