Surname Гуарино (Guarino 
, Гуарино) , in the entire world, is a common last name. The last name Гуарино is characteristic of Italy, where it is quite a common surname, Uruguay, and Philippines, where it is quite a rare surname. In absolute terms, it is the most numerous in Italy, Philippines, and the United States. Very seldom, Гуарино is the forename as well as the last name.