Chichigami-sama, or "breast deity," is a localized folk deity venerated at certain shrines and stone markers in Japan, most notably in areas like Sasayama and parts of Kyushu, where devotion centers on breast-shaped stones, ema (votive plaques) shaped like breasts, or carved images. Worshippers have traditionally visited these sites seeking blessings related to lactation, breastfeeding, and breast health, reflecting a broader Japanese tradition of localized folk deities tied to specific bodily concerns. As with many such folk practices, the deity's origins are rooted in regional custom rather than formal doctrine, and beliefs about its efficacy remain a matter of popular tradition rather than established religious authority.