Nozawana (野沢菜, Brassica rapa L. var. hakabura) is a Japanese leaf vegetable, often pickled.^[1] It is of the same species as the common turnip and one of a Japanese variety of mustard leaf.^[2] Its leaves are approximately 60–90 cm long.

Traditionally it is thought that sometime between 1751 and 1764 the plant was brought from the Kyoto mountains to the Nozawa-onsen village by the master of a Buddhist temple who lived in Nozawa. It was since cultivated around that area, and thus named Nozawana: na means vegetable in Japanese.

Pickled nozawana is one of the most typical local foods in Nagano Prefecture. It is also used in onigiri.^[3]