The name Jianna is a variant of the Italian name Gianna, which is a diminutive form of Giovanna. Giovanna is the feminine form of Giovanni, which is the Italian equivalent of John. The name John is derived from the Hebrew name Yochanan, which means "God is gracious." Therefore, the name Jianna carries the beautiful and profound meaning of "God is gracious." It signifies a person who is blessed with God's grace and favor.