Shanghai Baosteel Group Corporation (SSE: 600019) (Chinese: 上海宝钢集团公司; pinyin: Shànghǎi Bǎogāng Jítuán Gōngsī), commonly referred to as Baosteel (Chinese: 宝钢; pinyin: Bǎogāng) is a state-owned iron and steel company headquartered in Shanghai, China.

Baosteel is the second-largest steel producer in the world measured by crude steel output (after ArcelorMittal), with an annual output of around 20 million tons (China's total steel production in 2006 was 381.5 million tons). It employs around 109,000 employees, has annual revenues of around $21.5 billion and produces a mix of high-quality products.

Baosteel's IPO on the Shanghai Stock Exchange in 2000 was the largest in China up to that time, raising CNY 7.7 billion despite being limited to domestic investors only.

Beginning in 1978, the Chinese government began to institute economic reforms. Plans called for a large integrated steel production facility to be located near the port of Shanghai. The Baoshan District, a suburb of Shanghai, was chosen as the site and Japanese assistance was enlisted in constructing one of the most modern steel plants of the time. As the government's flagship steel company, Baoshan Iron and Steel (Chinese: 宝山钢铁（集团）公司; pinyin: Bǎoshān Gāngtiě (Jítuán) Gōngsī) as it was originally called, benefitted from acquiring the best engineers and managers, access to cutting edge technology, and receiving hefty government contracts.