Cognomen Кувахара (Kuwahara 
, 桑原 , Kuvahara 
) , worldwide, is quite a rare family name. The cognomen Кувахара is characteristic of Fiji, where it is quite a rare surname, Slovenia, and Hong Kong, where it is a rare surname. Not in comparison with a country's population, it is commonest in the United States, Japan, and Brazil. Much less frequently, Кувахара is the forename as well as the last name.