Last name Туллио (Tullio 
, Туллио 
) , throughout the world, is quite a rare family name. The cognomen Туллио is characteristic of Cayman Islands, where it is quite a rare surname, Italy, and Cyprus. Measured by absolute frequency, it is commonest in Italy, Brazil, and the United States. More prevalently, Туллио is the forename as well as the last name.