Justinn \j(u)-sti-nn, jus-tinn\ as a girl's name is a variant of Justine (Latin), and the meaning of Justinn is "fair, upright".

The baby name Justinn sounds like Justina, Austine, Austina, Jestina, Jestine, Justyne, Justyna, Justene and Justeen. Other similar baby names are Dustin, Justice, Justiss and Justie.