Family name Janju (Яню 
, Janju 
, จันจู ) , across the world, is quite a rare cognomen. The family name Janju is habitual in Bulgaria, where it is quite a rare surname, Pakistan, where it is a rare surname, and Thailand. Not in comparison with a country's population, it is commonest in Pakistan, Bulgaria, and India. Likewise, Janju is the forename as well as the last name.