Fa?l Allah al-'Umari (???? ????? ??? ??????? ???? ?? ??? ???? ??????), or simply Ibn Fa?l Allah al-‘Umari, (1300 – 1349) was an Arab historian, born in Damascus.
Born as a scion of a family of bureaucrats, al-?Umari (as his name implies) traced his origin to Umar, the second Islamic caliph.
His father held the important post of katib as-sirr (head of the chancery) of the Mamluk Empire.
During his life, his scholarly works and writings were used in the administration of the Mamluk Empire's dominions of Egypt and Syria, and later became standard sources for Mamluk history.