Last name 櫟 (Ichii 
, 櫟 ) , around the globe, is a rare surname. The surname 櫟 is characteristic of Switzerland, where it is a rare surname, Indonesia, where it is a very rare surname, and Brazil. In absolute terms, the name is most common in Indonesia, Brazil, and China. Much more prevalently, 櫟 is the forename as well as the last name.