Family name Hilena (Hilena 
) , in the entire world, is a rare cognomen. The family name Hilena is characteristic of Ethiopia, where it is a rare surname, Honduras, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Ethiopia, China, and Nigeria. More prevalently, Hilena is the forename as well as the last name.