Quick answer
Mariana is a girl name.
Pronunciation: European Portuguese /mɐ.ˈɾjɐ.nɐ/; Brazilian Portuguese /ma.ˈɾjɐ̃.nɐ/; Spanish /ma.ˈɾja.na/.
Meaning and history
Roman feminine form of Marianus. After the classical era it was sometimes interpreted as a combination of Maria and Ana. In Portuguese it is further used as a form of Mariamne.
Notes and context
Usage: portuguese, spanish, romanian, czech, slovak, bulgarian, ancient roman | Bulgarian: Мариана