Johna \jo(h)-na\ as a girl's name is a variant of Johnna (Hebrew), and the meaning of Johna is "God is gracious".

The baby name Johna sounds like Joana, Jonna and Jona. Other similar baby names are Johana, Oona, Nona, Tona, Dona, Donna, Dahna, Jenna, Jeena, Jena, Joya, Jovana, Honna, Joanna, Ioana, Iona, Jaena, Joppa, Janna, Jana, Juana, Joni, Johanna, Joan, Jinna, Jayna, Jaina, Jeana, Jiana, Jina, Jolana, Jone, Joane, Joann, Jobyna, Jobina, Jocia, Joda, Joela, Jonni, Jonnae, Jonay, Jonae, Johnnae, Jola, Jolyna, Jolina, Jolena, Jonina, Josana, Josina, Jovina, Jovena, Joia, Lonna, Lona, Mona, Moyna, Monna, Moina, Mouna, Nonna, Roana, Rona, Ronna, Sohnia, Tahna, Yoana, Yona, Zahna and Zona.