Sumitomo Riko Co. Ltd. (住友理工株式会社, Sumitomo Rikō Kabushiki-gaisha) is a Japanese company which produces rubber and other synthetic resin products.

[3] In June 2014, the company changed its corporate name from Tokai Rubber Industries to Sumitomo Riko to clarify that it is a part of the Sumitomo Group.

[4] Through its subsidiaries in 24 countries, the company claims to hold the largest market share of automotive anti-vibration products.

[4] Automotive products account for nearly 80 percent of sales.

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