Giovannantonio is a masculine blended given name that is a combination of Gianni and Antonio. Notable people known by this name include the following:
Giovannantonio Cipriani (1824–1906), Italian political activist Giovanantonio Tagliente, alternate name for Giovanni Antonio Tagliente (c. 1460s - c. 1528), Italian calligrapher, author, printer and publisher
See also
Giovan Antonio Giovanni Antonio