Gianna is a female Italian given name, a diminutive form of Giovanna. In English it is translated as Joann or Joanna. These names both mean "God is gracious" or as some people say "the Lord is gracious". See also "John (given name)" for the origin. Here are some names close to Gianna: Gia, Gina and Jenna. Here are some nicknames for Gianna: Gigi, Gia and Gi.