Globally, Ийна (Iina 
, Ijna , Ийна 
) is a rare feminine forename. The given name Ийна is habitual in Finland, where it is quite a rare feminine name, Namibia, and Sweden, where it is a rare feminine name. In absolute terms, it is the most numerous in Finland, India, and Indonesia. Much less frequently, Ийна is the last name as well as the forename.