We have one object that Sinya Okayama has been involved with.

If you would like to cite this person in a Wikipedia article please use the following template:

<ref name=CH>{{cite web |url=https://collection.cooperhewitt.org/people/18044231/ |title=Sinya Okayama |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=20 April 2019 |publisher=Smithsonian Institution}}</ref>