Cognomen 楽 (Raku 
, 楽 
) , in the world, is quite a rare last name. The last name 楽 is characteristic of Qatar, where it is quite a rare surname, Estonia, where it is a rare surname, and Oman. Not in comparison with a country's population, it most frequently occurs in China, India, and Indonesia. More frequently, 楽 is the forename as well as the last name.