Cognomen Cinthia (Cinthia 
) , across the world, is a common last name. The cognomen Cinthia is habitual in Latin America and the Caribbean, particularly Honduras, where it is a common surname, Mexico, where it is quite a common surname, and Nicaragua. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Mexico, Honduras, and Argentina. More prevalently, Cinthia is the forename as well as the last name.