Somdet Phra Naresuan Maharat (1555, 25 April - 1605) is the King of the Ayutthaya kingdom from 1590 until his death in 1605.

Naresuan is one of Siam's most revered monarchs as he is known for his campaigns to free Siam from Burmese tributary.

Numerous wars against Burma are fought in his reign and Siam reaches its greatest territorial extent and influence.