China Petroleum & Chemical Corporation or Sinopec Limited, is a Chinese oil and gas company based in Beijing, China. It is listed in Hong Kong and also trades in Shanghai and New York. Sinopec is the world's fifth biggest company by revenue.

In 2009, it was ranked 9th by Fortune Global 500 becoming the first Chinese corporation to make the top ten and in 2010 it was ranked 7th. In 2007, it ranked first in the Top 500 Enterprises of China ranking.