Last name カツキ (カツキ 
, Katuki 
, Katsuki 
) , in all the world, is quite a common cognomen. The last name カツキ is habitual in Japan, where it is quite a rare surname, Brazil, where it is a very rare surname, and Australia. In absolute terms, it most frequently occurs in Japan, Brazil, and Indonesia. Likewise, カツキ is the forename as well as the last name.