The Abu Dhabi National Oil Company (ADNOC) was established by the government of Abu Dhabi in November 1971 to lead development of the Abu Dhabi petroleum industry.

In addition to its own operations, ADNOC has broadened its activities and set up a group of 14 subsidiary ventures, known as the ADNOC Group of Companies. These companies cover the areas of exploration and production, oil refining and gas processing, support services, chemicals and petrochemicals, maritime transportation, and refined products and distribution and constitute the structure of the petroleum industry in Abu Dhabi.

Refined Products Distribution
ADNOC Distribution (ADNOC)

Maritime Transportation
Abu Dhabi National Tanker Company (ADNATCO)
National Gas Shipping Company (NGSCO)

Chemicals and Petrochemicals
Ruwais Fertilizer Industries (FERTIL)
Abu Dhabi Polymers Company Limited (BOROUGE)

Exploration and Production Services
National Drilling Company (NDC)
ESNAAD
Abu Dhabi Petroleum Ports Operating Company (IRSHAD)

Exploration and Production of Oil and Gas
Abu Dhabi Company For Onshore Oil Operations (ADCO)
Abu Dhabi Marine Operating Company (ADMA-OPCO)
Zakum Development Company (ZADCO)

Oil and Gas Processing
Abu Dhabi Gas Industries Limited (GASCO)
Abu Dhabi Gas Liquefaction Company Limited (ADGAS)
Abu Dhabi Oil Refining Company (TAKREER)