Could Gianna be the perfect name for your baby girl? The baby girl name Gianna is 6 letters long, and contains 3 vowel(s) and 3 consonant(s). Gianna is a baby girl name that starts with the letter G and ends in the letter A. The baby girl name Gianna has a popularity of 98% and is ranked 22 in the list of top 1000 most popular baby girl names. If Gianna isn't the ideal name for your baby girl then take a look here for some randomly generated names. Hopefully you'll find a more suitable first name for your baby girl than Gianna!