Last name Яманака (Yamanaka 
, 山中 , Яманака 
) , around the world, is quite a common surname. The last name Яманака is habitual in Eastern Asia, particularly Taiwan, where it is quite a rare surname, Japan, where it is a rare surname, and Hong Kong. Measured by absolute frequency, it is the most numerous in Brazil, Japan, and the United States. Much less frequently, Яманака is the forename as well as the last name.