Al-Qadisiyyah Province (Arabic: القادسية Al Qādisiyyah‎‎) (or Qadisiyyah Province) is ane o the provinces o Iraq. It is in the center-sooth o the kintra. Its caipital is Al Diwaniyah. Afore 1976, it wis pairt o the ad-Diwāniyyah Province, alang wi al-Muthannā Province an Najaf Province. The province is namit efter the historical ceety of Al-Qadisiyyah; the steid o the Battle o al-Qadisiyyah, whaur in 636 CE the Islamic Rashidun forces defeatit the forces o the Sassanid Empire.