John Cockerill (company, 1825–1955)

John Cockerill & Cie. was an iron, steel, and manufacturing company based at Seraing, Liège Province in Belgium. It was founded in 1825 by English-born industrialist John Cockerill. It was one of the most notable companies to emerge in the early years of the Industrial Revolution in Belgium.

John Cockerill, a son of British entrepreneur William Cockerill, owned the company, and it was known as John Cockerill & Cie. However, John Cockerill died in Warsaw in 1840 after a business trip to Russia. Following his death, the company became state owned, and in 1842, it became known as the Société anonyme pour l'exploitation des établissements de John Cockerill.

For much of its existence, Cockerill was one of the major iron and steel producers in Western Europe. It was a significant producer of derived products, including rail and railway locomotives, iron production equipment, and other large-scale iron and steel constructions.

In 1955, the company merged with Ougrée-Marihaye to form SA Cockerill-Ougrée. In 1981, it merged with Hainaut-Sambre to form Cockerill-Sambre.