Cognomen Sumane (Sumane 
) , in the world, is a rare last name. The last name Sumane is characteristic of Latvia, where it is quite a rare surname, South Africa, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Latvia, India, and South Africa. Also, Sumane is the forename as well as the last name.