Family name Туллий (Tulio 
, Tullio 
, Tullius 
) , globally, is a common surname. The cognomen Туллий is habitual in Honduras, where it is quite a common surname, Venezuela, and Philippines, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Philippines, Venezuela, and Brazil. More prevalently, Туллий is the forename as well as the last name.