The 940s decade ran from January 1, 940, to December 31, 949. Significant people Al-Radi Abbasid caliph Abd al-Rahman III caliph of Córdoba Constantine VII of Byzantium Al-Muttaqi caliph of Baghdad Al-Mustakfi caliph of Baghdad Al-Qa'im of Fatimid dynasty Al-Mansur bi-Nasr Allah of Fatimid dynasty Al-Muti caliph of Baghdad References