Meaning A girl's name of Latin origin, it means "Diminutive of Joanna: God is gracious Feminine form of John (from the Latin, Johanna)." Origin of Jo Latin +-100%Zoom level changed to 1 Popular Middle Names Elizabeth Pronunciation 🔊 Listen Jo JHOW Similar Names Joanne Joanna Joani Jeanie Jeannie Jeannett Janice Janey Jeannine Janetta Year by Year Popularity of Jo