Globally, Proto (Proto 
, بروتو) is quite a rare masculine first name. The first name Proto is characteristic of Mexico, where it is a rare male name, Italy, and Argentina. Measured by absolute frequency, the name is most common in Mexico, Italy, and Philippines. More prevalently, Proto is the last name as well as the forename.
Proto is also a name for the fictitious and mythical characters: Proto Man , the fictional robot from Mega Man; Proto , the Nereid of Greek mythology; Proto Zoa , the character from 1999 film 'Zenon: Girl of the 21st Century', Zenon: Z3; Proto Zoa's Band #3 , the character from 2001 film 'Zenon: The Zequel' and Proto Zoa's Band #4 , the character from 2001 film 'Zenon: The Zequel', among other works.