Surname 蒙日 (Monge 
, 蒙日 
) , in the entire world, is a common last name. The surname 蒙日 is habitual in Latin America and the Caribbean, particularly Costa Rica, where it is a widespread surname, El Salvador, where it is a common surname, and Nicaragua, where it is quite a common surname (explore the name in all countries). In absolute terms, it is the most numerous in Latin America and the Caribbean, particularly Costa Rica, Mexico, and El Salvador. Very seldom, 蒙日 is the forename as well as the last name.