Surname Restha (Restha 
) , around the world, is a rare last name. The cognomen Restha is characteristic of Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and India. Also, Restha is the forename as well as the last name.