ThyssenKrupp AG is a German multinational conglomerate with focus on industrial engineering and steel production. The company is based in Duisburg and Essen and divided into 670 subsidiaries worldwide. It is one of the world's largest steel producers; it was ranked tenth-largest worldwide by revenue in 2015. The company is the result of the 1999 merger of Thyssen AG and Krupp, and now has its operational headquarters in Essen. The largest shareholders are Alfried Krupp von Bohlen und Halbach Foundation and Cevian Capital.
In addition to steel production, ThyssenKrupp's products range from machines and industrial services to high-speed trains, elevators, and shipbuilding. Subsidiary ThyssenKrupp Marine Systems also manufactures frigates, corvettes, and submarines for the German and foreign navies.
In 2018, ThyssenKrupp announced that the company would split into two companies, ThyssenKrupp Industrials, and ThyssenKrupp Materials. The split was supposed to take effect beginning 1 October 2019; however, in May 2019, it was revealed that ThyssenKrupp cancelled its plans to split the company into two.