Arab Iron and Steel Union ( AISU ) was established in Algeria in 1971 as the first Arab union of Arab countries to be established under the umbrella of the Council of Economic Unity in the League of Arab States.

AISU is a non-governmental organization of a private nature, not of a political or commercial nature.

AISU works in the field of preparing studies, organizing courses and holding periodic conferences for the prosperity of the Arab iron and steel industry. The union includes a wide range of companies with multiple activities related to the iron and steel industry.