Hitachi, Ltd. (株式会社日立製作所, Kabushiki gaisha Hitachi Seisaku-sho, lit. "Share Company Hitachi Manufacturing Plant") (Japanese pronunciation: ) is a Japanese multinational conglomerate company headquartered in Chiyoda, Tokyo, Japan. It is the parent company of the Hitachi Group (Hitachi Gurūpu) and formed part of the Nissan zaibatsu and later DKB Group of companies before DKB merged into the Mizuho Financial Group. Hitachi operates eleven business segments, ranging from Information & Telecommunication Systems to Construction Machinery.
Hitachi is listed on the Tokyo stock Exchange and is a constituent of the Nikkei 225 and TOPIX indices. It is ranked 38th in the 2012 Fortune Global 500 and 129th in the 2012 Forbes Global 2000.