Globally, Melaniia (Мелания 
, Меланииа , Melaniia 
) is quite a rare girly first name. The forename Melaniia is habitual in Kazakhstan, where it is quite a rare girly name, Russia, and Ukraine, where it is a rare feminine name. Much less frequently, Melaniia is the last name as well as the forename.
Melaniia is also a popular name for the fictitious and mythical characters: Melanie Hamilton , the Scarlett O'Hara's sister in law, Gone with the Wind; Melanie Walker , the character in Batman Beyond; Mel Bush , the Doctor Who character; Melania Macmillan , character in Harry Potter and Melanie Glaser , character in The Secret Circle, and in many other works.