Cognomen Eriha (Eriha 
) , around the world, is a very rare last name. The surname Eriha is characteristic of New Zealand, where it is a rare surname, Australia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in New Zealand, Australia, and India. More prevalently, Eriha is the forename as well as the last name.