Surname Дазай (Dazai 
, Дазай) , all around the world, is a very rare last name. The last name Дазай is characteristic of Indonesia, where it is a very rare surname, Canada, where it is an extremely rare surname, and Brazil. Not in comparison with a country's population, the name is most common in Indonesia, Brazil, and Nigeria. Likewise, Дазай is the forename as well as the last name.