Family name Joulii (Жулий 
, Joulii) , all around the world, is a rare cognomen. The last name Joulii is characteristic of Georgia, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Russia, Kazakhstan, and Georgia. Much less frequently, Joulii is the forename as well as the last name.