Nippon Steel Corporation is Japan's largest steelmaker, headquartered in Chiyoda-ku, Tokyo. The company has four business segments, including steelmaking, engineering, chemicals, and system solutions. It is the largest producer of crude steel in Japan and the third largest in the world. The original cooperation was established in 1970 by the merger of Fuji Iron & Steel and Yawata Iron & Steel. The company is on the Forbes Global 2000 list, ranked 1971 in 2023.