Last name Mamanii (Mamanii 
) , globally, is a very rare cognomen. The cognomen Mamanii is habitual in Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, Peru, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Bolivia, India, and Peru. Very seldom, Mamanii is the forename as well as the last name.