Ceylon Petroleum Corporation, commonly known as CEYPETCO (CPC), is a Sri Lankan oil and gas company.

It was formed in 1961 by nationalisation and expropriation of all private oil companies in Sri Lanka at the time of its formation.

CPC accounts for more than half of Sri Lanka's petroleum products market share, 60% national refining capacity.

CPC own and operate single refineries with a combined refining capacity of 50,000 barrels (7,900 m3) per stream day.

Besides, many products were added to the distribution and retail trade by CEYPETCO: agrochemicals, chemical fertiliser, LPG, Naphtha, synthetic fiber.

[8] Between 1977 and 1994 the country came under UNP rule in which under President J.R Jayawardana Sri Lanka began to shift away from a socialist orientation in 1977.

Post-1977, private sector activity in lubricant, synthetic fiber and bunkering oil subsectors was allowed under privatisation on an initiative taken in the early 1980s.

In addition, the operation of LPG importation and distribution was also allowed later in which retail sales have been undertaken by entities outside CEYPETCO.

In late 1996 Royal Dutch Shell purchased a 51 per cent stake in the CPC's LPG division for US$37 million.

Ten years after government brought back majority stake for US$63 million as a part of its wider policy of President Mahinda Rajapaksa’s re-nationalization.

Accordingly, the Lanka Indian Oil Company (LIOC) was set up and allowed importation and retail distribution of key petroleum products: diesel, petrol and bitumen.

[15] As a result in March 2023 three corporations were allowed to enter Sti Lanka: United Petroleum, Sinopec, and RM Parks in a collaboration with Shell.