Mari Petroleum Company Limited (PSX: MPCL), formerly known as Mari Gas Company Limited, is one of the local exploration and production companies operating in Pakistan. It manages and operates the Country's largest gas reservoir in terms of current reserves at Mari Field, District Ghotki, Sindh. The Company was renamed Mari Petroleum Company Limited in November 2012.
Mari Petroleum Company Limited's first field was discovered in 1957 when the company operated as Esso Eastern Inc. Later in 1983, the company was acquired by Fauji Foundation, OGDC and Government of Pakistan, and in 1984, Mari Gas Company Limited was formed which overtook the entire Mari gas field with headquarters in Islamabad.