Surname Buhna (Buhna 
, Бухна 
) , around the world, is a rare family name. The cognomen Buhna is habitual in Aland Islands, where it is quite a common surname, Moldova, where it is quite a rare surname, and Romania, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Moldova, Romania, and Poland. Very seldom, Buhna is the forename as well as the last name.