Family name Кирен (Kieren 
, Кирен 
) , globally, is a rare last name. The surname Кирен is characteristic of Germany, where it is a rare surname, the United States, where it is a very rare surname, and Malaysia. In absolute terms, this name is the most popular in Germany, the United States, and Nigeria. More prevalently, Кирен is the forename as well as the last name.