Cognomen Ijaja (Ijaja 
) , in the world, is a rare surname. The family name Ijaja is habitual in Nigeria, where it is a rare surname, India, where it is an extremely rare surname, and South Africa. More frequently, Ijaja is the forename as well as the last name.
Mo, Oluji, Yasim, Martha, Mathew, Monday, Samuel, Saiyad, Sayyad, Shaikh, Andrew, Ansari, Atthar, Ahmada, Ahamad, Bepari, Karnal, Kittur, Pathan, Desayi, Joshua, Nadaph, Isaac, Maniyar, James, Patel, Abu, Kho, Eno, Mary, Sekh, Amos, Khan, Paul, Jata, John, Tony, Maria, Moses, Momin, Mulla, Simon, Sutar, Sekha, Arome, Attar, Khaji, Peter, and Ojonugwa