Caliph
Explore 2 of history's most influential caliph, ranked by historical influence. Each figure links to a full biography, feats, trivia and similar people.
Umar ibn al-Khattab
84Umar ibn al-Khattab was the second Rashidun caliph, one of the most powerful and influential leaders in Islamic history, under whom the early Muslim state expanded into a vast empire and developed its foundational institutions of government.
Harun al-Rashid
81Harun al-Rashid was the fifth Abbasid caliph, under whom the Islamic empire reached the height of its wealth, power and cultural splendor, ruling from Baghdad in an age immortalized in the tales of the Thousand and One Nights.