Zhengyi or Zheng Yi (Wade–Giles: Cheng I) may refer to:
Zhengyi Dao, a Daoist movement founded by Zhang Daoling Zhengyi, a lich character from Dungeons & Dragons Zheng Yi (author) (; born 1947), of Scarlet Memorial: Tales of Cannibalism in Modern China Zheng Yi (pirate) (; 1765–1807), a Chinese pirate of the South China Sea Zheng Yi (swimmer), American swimmer
See also Cheng Yi (disambiguation)