Nganu Leima (Meitei: ꯉꯥꯅꯨ ꯂꯩꯃ, lit. 'duck lady') is the goddess of ducks and waterfowl in Sanamahism, the indigenous religion of Manipur. She is a sister of goddesses Khunu Leima and Shapi Leima. Legend says that all three sisters married to the same mortal man.

Nganu Leima is described as the mistress of all the ducks and waterfowl of the world. According to the Sanamahist religion she has the ability to summon all the ducks and waterfowl at any place she wishes. She is one of the daughters of the sky god Salailen.