Family name Yasushi (Yasushi 
, 井上 , Ясуши 
) , all around the world, is quite a rare last name. The surname Yasushi is habitual in Japan, where it is quite a rare surname, Taiwan, where it is a rare surname, and Singapore. Measured by absolute frequency, it is the most numerous in Eastern Asia, particularly Japan, China, and Taiwan. Also, Yasushi is the forename as well as the last name.