Family name Fanja (Fanja 
, Фаня 
) , in the world, is quite a rare cognomen. The cognomen Fanja is characteristic of Madagascar, where it is quite a rare surname, Oman, and Bulgaria. More frequently, Fanja is the forename as well as the last name.
Le, Ramananjato, Rambeloniaina, Rajoeliarivony, Rasoarimalala, Raharimalala, Rakotonirainy, Rakotomalala, Rakotomamonjy, Ratsimbazafy, Rakotonirina, Rakotomanana, Razafintsalama, Razafimahafaly, Andrianarisoa, Andriamialisoa, Rakotondrazaka, Razafindrakoto, Razafindrazaka, Andriamanantena, Rahanitriniaina, Rakotoarimanana, Raveloson, Razafindrazato, Rahajason, Rasoanaivo, Kely, Raza, Simon, Cazal, Persi, Rezac, R-Thôle, Thôle, Tiana, Andria, Glapion, Nirina, Mercier, Randria, Rajaona, Ravoavy, Randrenalijaona, Raoelison, Ramaroson, Ramahatafandry, Rajaofera, Raharison, and Razafimahatratra