Worldwide, Japper (Japer 
, Japper 
) is a rare principally boy's, but very seldom female given name. The first name Japper is characteristic of Saudi Arabia, where it is a rare masculine name, Syria, and Philippines, where it is a very rare boy's name. Measured by absolute frequency, it is commonest in Saudi Arabia, Syria, and India. More frequently, Japper is the last name as well as the forename.