Yoichiro Kawaguchi (河口 洋一郎, Kawaguchi Yoichirō, born 1952 in Tanegashima, Kagoshima) is a Japanese computer graphics artist and professor emeritus at the University of Tokyo. Kawaguchi rose to international prominence in 1982 when he presented "Growth Model" in the international conference SIGGRAPH.^[1]

You can help expand this article with text translated from the corresponding article in Japanese. (May 2018) Click [show] for important translation instructions. View a machine-translated version of the Japanese article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 3,687 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:河口洋一郎]]; see its history for attribution. You may also add the template {{Translated|ja|河口洋一郎}} to the talk page. For more guidance, see Wikipedia:Translation.

This biography of a living person needs additional citations for verification. (December 2017)

In 2013, Kawaguchi designed Cosmo, a robot that performs keyboards with a laser.^[2] Cosmo was designed to be one of the members of Squarepusher's virtual band Z-Machines, which was created to promote the alcoholic beverage ZIMA. They performed their debut piece on 24 June 2013 in Tokyo, Japan.^[3]

On March 31, 2018, he retired from his post as a professor at the University of Tokyo and received the title of professor emeritus.^[4] In the same year he was appointed president of the Digital Content Association of Japan.^[5]

• Medal with Purple Ribbon (2013)
• Person of Cultural Merit (2023)^[6]