Al Hufuf, also Hofuf, city in eastern Saudi Arabia, in Ash Sharqiyah (Al Hasa) Province, situated in the largest oasis in the country. A walled city and a trade center, Al Hufuf is connected by rail and road with Riyadh and Ad Dammam. Manufactures include cloth, copper and brass products, and swords and daggers. The oasis, watered by many springs, grows dates, fruit, rice, wheat, and barley. The 'Osmanîya oil field is nearby and to the southwest. Originally called Al Hasa, the city was headquarters of the 10th-century Qarmatian Muslim sect. Population 101,271 (1974).
