Taiyo Yuden Co., Ltd. (太陽誘電株式会社, Taiyō Yūden Kabushiki-gaisha, translated as Sun Dielectric Co., Ltd.) is a Japanese materials and electronics company, situated in Kyobashi, Chuo, Tokyo, that helped pioneer recordable CD technology (CD-R) along with Sony and Philips in 1988.

Founded 70 years ago, Taiyo Yuden currently operates factories in Japan, Singapore, Korea, China, the Philippines, Taiwan, and Malaysia.

The underlying organic cyanine dye technology was developed by a team of Taiyo Yuden engineers, Takashi Ishiguro and Emiko Hamada.

[12] In 1987, START Lab Inc. was founded as a joint venture between Sony Corporation and Taiyo Yuden Co., Ltd. for the CD-R recording media business in Japan.

Rebranded Taiyo Yuden media could be found under Fujifilm, Fusion, Maxell, Miflop, Panasonic, Plextor, Sony, TDK, and Verbatim Corporation brands.

In mid-2015, Taiyo Yuden announced its intention to withdraw from the optical media business (including CD-R, DVD-R and BD-R) by December of that year.