Sumitomo Chemical Co., Ltd. (住友化学株式会社, Sumitomo Kagaku Kabushiki-gaisha) is a major Japanese chemical company.

The company is listed on the first section of the Tokyo Stock Exchange and is a constituent of the on the Nikkei 225[3] stock index.

It's a member of the Sumitomo group and was founded in 1913 as a fertilizer manufacturing plant.