Last name Нена (Nena 
, Нена 
) , worldwide, is a common cognomen. The cognomen Нена is habitual in Bulgaria, where it is quite a common surname, Lesotho, where it is quite a rare surname, and Serbia. Not in comparison with a country's population, it most frequently occurs in India, Indonesia, and Bulgaria. More frequently, Нена is the forename as well as the last name.