Surname निरंजन (Niranjan 
, निरंजन ) , in all the world, is a common last name. The surname निरंजन is habitual in Fiji, where it is quite a common surname, Sri Lanka, and Qatar, where it is quite a rare surname. In absolute terms, it most frequently occurs in Southern Asia, particularly India, Sri Lanka, and Nepal. Much more frequently, निरंजन is the forename as well as the last name.