Rengetsu ware (蓮月焼, Rengetsu-yaki) is a type of Japanese pottery that was made by the Buddhist nun Ōtagaki Rengetsu (1791–1875).

She was a prolific poet and calligrapher, but also an artisan. She created a number of vessels for sencha and chanoyu tea drinking traditions.^[1] She also created a large number of sake vessels such as tokuri flasks and guinomi cups.^[2] She adorned her ceramics with poems written in her calligraphic style.

Her style of ware was continued even after her death and a traditional center of production was in Okazaki, Kyoto.