Family name Yajum (Yajum 
) , throughout the world, is a very rare cognomen. The family name Yajum is habitual in Southern Asia, particularly India, where it is an extremely rare surname. Much more frequently, Yajum is the forename as well as the last name.
Rai, Mugli, Sorum, Potom, Ronya, Riram, Dulom, Gongo, Lombi, Tarak, Tamin, Nirin, Nguri, Nguki, Yudik, Zirdo, Murtem, Puying, Gamlin, Lomdak, Ngomle, Yorung, Marde, Yoka, Hemi, Haji, Ete, Mara, Mosu, Sera, Baki, Bage, Baja, Belo, Bogo, Kayi, Yorpen, Komi, Riba, Rilo, Diru, Doke, Gadi, Ligu, Tame, Tali, Taba, Nalo, Kena, and Singkom