Nanda Bayin (1535 – November 1600), is the king of the Toungoo Dynasty of Myanmar from 1581 to 1599.

Nanda is the first son of King Bayinnaung.

He is made the crown prince upon the ascension of his father in January 1551.

As the crown prince, he leads the subjugation of Lanna and the sack of Vientiene in 1565.

He also wages wars alongside his father against Ayutthaya that eventually lead to the fall of the city in 1564 and 1569.