Cognomen Agaru (Gaharu 
, Agaru 
) , in all the world, is quite a rare family name. The family name Agaru is habitual in Papua New Guinea, where it is quite a rare surname, Indonesia, where it is a rare surname, and Malaysia, where it is a very rare surname. In absolute terms, the name is most common in Indonesia, India, and Papua New Guinea. Likewise, Agaru is the forename as well as the last name.