Subsidiaries of Kuwait Petroleum Corp. include: Kuwait Oil Co. (KOC), Kuwait National Petroleum Co., Petrochemical Industries Co. (PIC), Kuwait Oil Tanker Co., Kuwait Foreign Petroleum Exploration Co. (Kufpec), and Kuwait Petroleum International (KPI, London)

Original Concession Holders:

Kuwait Oil Co. Ltd., subsidiary of BO (Kuwait) Ltd., and Gulf Kuwait Co., Kuwait Shell Development Co. Ltd., owned by Royal Dutch/Shell Group

For Kuwaiti portion of Neutral Zone:

Offshore: Arabian Oil Company Limited, Japan Petroleum Trading Co. Ltd.

Onshore: American Independent Oil Co., joint venture of Phillips Petroleum, Signal Oil and Gas, Ashland, J.S. Abercrombie, Sunray Mid-Continent Oil Co., Globe Oil and Refining Co., and Pauley Petroleum Inc.