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Around the globe, Сиина (Etsusaburo , Shiina , Siina ) is quite a rare dominantly masculine, but uncommonly girly first name. The given name Сиина is habitual in Japan, where it is quite a rare boy's name, Finland, where it is a rare girly name, and Indonesia, where it is a very rare gender-neutral name. In absolute terms, it most frequently occurs in Japan, Indonesia, and China. Much less frequently, Сиина is the last name as well as the forename.
Сиина is also a name for the fictitious and mythical characters: Shiina Murakami , the Magic of Stella's character, Stella no Mahō.