Throughout the world, Сайни (Signy 
, Сайни 
) is a rare largely female, but uncommonly male first name. The forename Сайни is habitual in Iceland, where it is quite a rare girly name, Norway, where it is a rare principally feminine, but scarcely boy's name, and Italy, where it is a very rare girly name. In absolute terms, it is commonest in Iceland, Norway, and the United States. Likewise, Сайни is the last name as well as the forename.