Surname イチヤ (Ichiya 
, イチヤ ) , worldwide, is a rare last name. The last name イチヤ is characteristic of Japan, where it is a rare surname, Morocco, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Japan, Morocco, and China. More frequently, イチヤ is the forename as well as the last name.