Family name Наоя (Naoya 
, Naoia 
, Наоя 
) , in all the world, is a rare last name. The last name Наоя is characteristic of Taiwan, where it is a rare surname, Philippines, and Japan. Measured by absolute frequency, this name is the most popular in China, Philippines, and Taiwan. More prevalently, Наоя is the forename as well as the last name.