The Banu Thaqif (Arabic: بنو ثقيف, romanized: Banū Thaqīf) is an Arab tribe which inhabited, and still inhabits, the city of Ta'if and its environs, in modern Saudi Arabia, and played a prominent role in early Islamic history.
During the pre-Islamic period, the Thaqif rivaled and cooperated with the Quraysh tribe of Mecca in trade and land ownership. The tribe initially opposed the Islamic prophet Muhammad, but following the Muslim siege of Ta'if in 630, they came to terms and embraced Islam. The Thaqif's inter-tribal networks and their relatively high education helped them quickly advance in the nascent Muslim state. They took on an especially important role in the conquest and administration of Iraq, providing the Rashidun and Umayyad caliphs capable and powerful governors for that province and the eastern Caliphate.