Cognomen Umena (Umena 
) , in the entire world, is a rare surname. The family name Umena is habitual in Japan, where it is a rare surname, Italy, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Japan, India, and Italy. Also, Umena is the forename as well as the last name.