Janna \j(an)-na\ as a girl's name (also used as boy's name Janna), is a variant of Jan (Hebrew), Jana (Hebrew), Jane (Hebrew) and Johnna (Hebrew), and the meaning of Janna is "God is gracious".

The baby name Janna sounds like Ianna, Jenna, Joanna, Jaena, Janne, Jannah, Jann, Janny, Jannae, Janea, Jinna, Jayna, Jania, Jaina, Jeanna, Jianna, Jonna, Wanna and Yanna. Other similar baby names are Lanna, Canna, Danna, Janina, Hanna, Janka, Nanna, Ranna, Sanna, Zanna and Vanna.