John Cockerill (1790–1840) was an English-born Belgian entrepreneur. Born at Haslingden, Lancashire, England, he was brought by his father William Cockerill to Belgium where he first continued the family tradition of building wool processing machinery. He founded the John Cockerill Company, an iron, steel, and manufacturing company based in Seraing in the region of Liège in Belgium. Here, large industrial machinery was manufactured.