Vimaladharmasuriya I, also known as Konappu Bandara and Don João da Austria or Don Jhon Appuhamy, is a king of Sri Lanka who rules the country from 1590 to 1604.

He is the ruler of the Kingdom of Kandy, located in the central hills of the present-day island nation of Sri Lanka.

His reputation is made when he successfully repulses two major Portuguese offensives in to Kandy, the Campaign of Danture in 1594 and the Battle of Balana in 1602, in both of which the Portuguese are humiliatingly defeated.