Surname Гаава (Haava 
, Гаава 
) , around the world, is a rare cognomen. The cognomen Гаава is habitual in Estonia, where it is quite a rare surname, Sweden, where it is a rare surname, and Russia, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Estonia, Sweden, and India. Very seldom, Гаава is the forename as well as the last name.