Cognomen Jpan (Koan 
, Shinai 
, Riksa 
) , in the world, is quite a rare surname. The cognomen Jpan is habitual in Malaysia, where it is quite a rare surname, Latvia, where it is a rare surname, and Indonesia. Measured by absolute frequency, it is commonest in Indonesia, Malaysia, and India. More frequently, Jpan is the forename as well as the last name.