QALCO :: Qatar Lubricants Co - Qatar's Premier Oil Company
- The QALCO lubricants blending plant is the first of its kind in the State of Qatar, and is owned by Qatar Industrial Services Establishment (QIS).
- http://www.qalco.net

Qatar Petroleum
- National company responsible for all oil and gas industry processes in Qatar and abroad. Includes projects, subsidiaries, oil and gas fields, industrial cities, environment, conferences, tenders and employment.
- http://www.qp.com.qa/

Petroserv Limited
- Includes the following divisions: engineering, trading, controls and communications. Features information on these divisions, and a list of the associated companies.
- http://www.petroserv-limited.com/

Qatar Liquefied Gas Company
- A liquefied natural gas company.
- http://www.qatargas.com/

Qatarization
- Intended to support the Strategic Qatarization Plan initiated to achieve a quality 50 percent national workforce in the oil and gas sector.
- http://www.qatarization.com.qa/

Ras Laffan Liquefied Natural Gas Co. Ltd.
- A LNG producer exporting mainly to Korea. Offers news, general information about the company and the projects.
- http://www.rasgas.com/