Toyo Seikan Group Holdings, Ltd. (東洋製罐グループホールディングス株式会社, Tōyō Seikan Gurūpu Hōrudingusu Kabushiki-gaisha) (formerly known as Toyo Seikan Kaisha, Ltd.) is a Japan-based packaging container manufacturing company. It became a holding company in 2013, taking the name Toyo Seikan Group Holdings Ltd. As of March 2013, the company has 78 subsidiary and nine affiliate companies. It is listed on the first section of the Tokyo Stock Exchange and the Osaka Securities Exchange and was a constituent of the Nikkei 225 stock index.