Abu Nasr ibn Iraq is Beruni's teacher, one of the leading figures of the Khorezm Mamun Academy, and a renowned scholar in mathematics, astronomy, and trigonometry. Insufficient information about his life and activities has been preserved. Abu Nasr was born in Kot, the capital of the Khorezmshahs. Well-known scholars, mosques and madrasas were regularly operating in Kot. Abu Nasr was educated in the madrasas of Kot and was educated by mature scholars. Since he was interested in the natural sciences from an early age, he studied Persian, Greek, and Latin, and studied the manuscripts written in these languages, especially the works of the ancient Greek scholars Euclid, Ptolemy, Minelay, Archimedes, as well as al-Khwarizmi and al-Farabi. He quickly became known as a mature scientist in the palace of the Africans. He combined his research work with the task of teaching at the Kot Madrasa, teaching his knowledge to talented young people. Several of the works he wrote here were dedicated to his student Beruni. Abu Nasr's creative activity from 996 to 1017 took place in Gurganj, Mamun Palace, Mamun Academy. In collaboration with Beruni, Ibn Sina, Abu Sahl Christian and other scholars, he created unique works in the field of mathematics and astronomy. In 1017, Mahmud Ghaznavi also took him to the capital Ghazna. However, we do not have enough information about his scientific activity in the Treasury, in the Sultan's palace. He died in 1036 in Ghazni.