Imanishi Shuzō is a Japanese sake brewery founded in 1660 in Miwa, now part of Sakurai in Nara Prefecture. It produces sake under the Mimurosugi and Mimorosugi names, drawing on its connection to Mount Miwa and Ōmiwa Shrine, traditionally associated with the deity of sake.

The brewery uses water from an on-site well fed by underground water from Mount Miwa. It works with contract rice growers in the area served by the same water source. Alongside its various Mimorosugi releases, the brewery produces the Mimurosugi Bodaimoto series using a historic method of preparing the fermentation starter that originated in Nara. This series uses rice from Nara Prefecture, while sake in its kioke bodaimoto line is fermented in wooden vats made from Yoshino cedar.

The brewery sells its established releases under the Mimorosugi name. Through the Bodaimoto series, it aims to preserve and share a historic sake brewing method from Nara.