Tokuyama Corporation (株式会社トクヤマ, Kabushiki-gaisha Tokuyama) is a Japanese, Tokyo-based chemical company[2] and the world's fourth largest silicon manufacturer.

[3] The company was founded as Nihon Soda Kogyo Co., Ltd., a producer of soda ash in 1918 by Katsujiro Iwai.

It changed name in 1936 to Tokuyama Soda Co., Ltd. and in 1994 to its present name.

[4] It is listed on the Tokyo Stock Exchange and is a component of the Nikkei 225 stock index.

[5] The company operates across Japan, Taiwan, China, South Korea, Singapore, Malaysia, Australia, United States, and Germany.