Yoshinari Shakuzuru was a Japanese Noh mask maker. His pseudonym was Ittosai. He was said to have been an actor of a sarugaku (an early form of noh) company in Omi Province (Shiga Prefecture) by the name of Kamidayu. He excelled in making masks with terrifying expressions.
Yoshinari Shakuzuru was born in about 1250 in Echizen Province (Fukui Prefecture), Japan.