Nane Sarma (, "Grandma Frost"), also known as Bibi Barfi (, "Grandma Snow"), is a mythical character in Iranian folklore. She is the wife of Amu Nowruz, the "Uncle Nowruz".
In 2012, the first Iranian folktale of Nane Sarma was published in English, in the book Pomegranates and Roses: A Persian Love Story.