Abu Abdallah al-Hasan al-Baridi (Arabic: الحسن البريدي; fl. 927/8–944) was the most prominent of the Baridi family, Iraqi tax officials who used the enormous wealth gained from tax farming to vie for control of the rump Abbasid Caliphate in the 930s and 940s.
In this contest Abu Abdallah and his two brothers manoeuvred between the military commanders Ibn Ra'iq and Bajkam, the Hamdanids of Mosul, the Buyids of Fars, and the ruler of Oman; they twice occupied the Abbasid capital Baghdad, but were never able to hold it for long; and at different times ruled Khuzistan, Wasit and Basra; Abu Abdallah himself was named vizier of the Abbasid caliph four times in the process. Ultimately, the constant warfare against multiple enemies exhausted the family's resources, and by 943 Abu Abdallah resorted to assassinating his youngest brother to shore up his wealth. Abu Abdallah died in June 944, and was succeeded as governor of Basra by his son Abu'l-Qasim, who ruled the city until the Buyids conquered it in 947.