| WESTPOINT PETROCHEMICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIDELAND PETROCHEMICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIE PETROCHEMICAL COMPANY LIMITED | Private company limited by shares | Live |
| WINFIELD PETROCHEMICAL LIMITED | Private company limited by shares | Live |
| WAH WING PETROCHEMICAL COMPANY LIMITED | Private company limited by shares | Live |
| WINTHAY PETROCHEMICAL LIMITED | Private company limited by shares | Live |
| UK XINSHENGDA PETROCHEMICAL LIMITED | Private company limited by shares | Live |
| XINYUAN PETROCHEMICAL INTERNATIONAL INVESTMENT TRADE (HK) LIMITED | Private company limited by shares | Live |
| XMAS PETROCHEMICAL LIMITED | Private company limited by shares | Dissolved |
| YONIC PETROCHEMICAL COMPANY LIMITED | Private company limited by shares | Live |
| QIAN KUN YUAN PETROCHEMICAL (SHANDONG) CO., LIMITED | Private company limited by shares | Dissolved |
| Zhongjing Petrochemical Co., Limited | Private company limited by shares | Dissolved |
| ZHONGNENG PETROCHEMICAL HOLDING LIMITED | Private company limited by shares | Live |
| Zhongrui International Petrochemical Technology & Equipment Engineering Limited | Private company limited by shares | Live |
| ZHONGYU PETROCHEMICAL LIMITED | | Live |
| PTH PETROCHEMICALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SG PETRO-CHEMICALS LIMITED | Private company limited by shares | Dissolved |
| MAX KINA PETROCHEMICALS CO., LIMITED | Private company limited by shares | Dissolved |
| PU ZHEN PETROCHEMICALS CO., LIMITED | Private company limited by shares | Live |
| ENRON PETROCHEMICALS LIMITED | Private company limited by shares | Dissolved |
| YIU KONG PETROCHEMICALS COMPANY LIMITED | Private company limited by shares | Live |
| TRUSGAIN PETROCHEMICALS LIMITED | Private company limited by shares | Live |
| VIBEN PETROCHEMICALS LIMITED | Private company limited by shares | Dissolved |
| Rui Hao Petrochemical-Tech Limited | Private company limited by shares | Live |
| SACHSEN PETROCHEMIE (CHINA) LIMITED | Private company limited by shares | Live |
| CHINA RESOURCES PETROCHEMS MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| 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 |
| PETROCK LIMITED | Private company limited by shares | Dissolved |
| PETROCKSTOW LIMITED | Private company limited by shares | Dissolved |
| Petroco Trading Limited | Private company limited by shares | Live |
| PETRO-COB LIMITED | Private company limited by shares | Dissolved |
| PETROCOCCHINO COMPANY LIMITED | Private company limited by shares | Dissolved |
| PETROCOM LIMITED | Private company limited by shares | Live |
| PETROCOM CBF LIMITED | Private company limited by shares | Dissolved |
| FSI PETROCOM LIMITED | Private company limited by shares | Live |
| Petrocom Global Aqua (China) Limited | Private company limited by shares | Dissolved |
| PETROCOM EXIM (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Petrocom Hydrogen Limited | Private company limited by shares | Live |
| Petrocom Nano-carbon Limited | Private company limited by shares | Dissolved |
| PETROCORP LIMITED | Private company limited by shares | Live |
| PHOENIX PETROCORP HK LIMITED | Private company limited by shares | Live |
| Petrocraft Limited | Private company limited by shares | Live |
| PETRODYNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| PETRO-EAST TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PETROEX (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| PETROF FAR EAST Limited | Private company limited by shares | Live |
| Petrof Spol .s r.o. Limited | Private company limited by shares | Live |
| PETROFAX LIMITED | Private company limited by shares | Dissolved |
| PETROFER ASIA LIMITED | Private company limited by shares | Live |
| PETROFIMA LIMITED | Private company limited by shares | Live |
| Petrofin International (HK) Limited | Private company limited by shares | Live |
| PETROFLESE LIMITED | Private company limited by shares | Live |
| Petroflow Solutions Asia Limited | Private company limited by shares | Live |
| PETROFUTURE INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| PETROGAS GAS-SYSTEMS ASIA LIMITED | Private company limited by shares | Live |
| PETROGAS INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| PETROGAS NAVIGATION LIMITED | Private company limited by shares | Live |
| PETROGAS OILCAM (HK) LIMITED | Private company limited by shares | Live |
| PHOENIX PETROGAS LIMITED | Private company limited by shares | Live |
| PETROGAS RESOURCES LIMITED | Private company limited by shares | Dissolved |
| PHOENIX STAR PETROGAS LIMITED | Private company limited by shares | Dissolved |
| PETROGENIC LIMITED | Private company limited by shares | Dissolved |
| Petrogenic (Asia) Limited | Private company limited by shares | Live Commenced dormancy on 16-Oct-2015 |
| PETROGENIC (HONG KONG) LIMITED | Private company limited by shares | Live |
| PETROGOLD FINANCIAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Petrogold (HK) Limited | Private company limited by shares | Dissolved |
| Petrogreen Limited | Private company limited by shares | Live |
| PETROGULF ENERGY LIMITED | Private company limited by shares | Live |
| PETROGULF RESOURCES PACIFIC LIMITED | Private company limited by shares | Dissolved |
| Petrohead Limited | Private company limited by shares | Live |
| PETROHOLLAND (HK) LIMITED | Private company limited by shares | Live |
| PETRO-HONGKONG LIMITED | Private company limited by shares | Live |
| Petrohouse Limited | Private company limited by shares | Dissolved |
| PETROIL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| PETROINVEST LIMITED | Private company limited by shares | Dissolved |
| PETRO-KMAS LIMITED | Private company limited by shares | Live |
| AYO PETROL LIMITED | Private company limited by shares | Live |
| AMERICA BEILIAO (ASIA) INTERNATIONAL PETROL CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| PETROL HEAD AUTO SERVICE LIMITED | Private company limited by shares | Live |