| Region: | Transoxiana (Central Asia) |
| Ethnicity: | Persian |
| Era: | Islamic Golden Age |
| Abu al-Hasan al-Bazdawi Arabic: أبو الحسن البَزدَوي | |
| Fakhr al-Islam Arabic: فخر الإسلام | |
| Birth Date: | 400 A.H. = c. 1010 A.D. |
| Birth Place: | Bazda (40 kilometers from the medieval town of Nasaf, near Bukhara) |
| Death Date: | 482 A.H.= 1089 A.D. |
| Death Place: | Samarqand |
| Religion: | Islam |
| Denomination: | Sunni |
| Jurisprudence: | Hanafi |
| Creed: | Maturidi |
| Main Interests: | Fiqh (Islamic jurisprudence), Usul al-Fiqh |
| Notable Works: | Usul al-Bazdawi |
| Influences: | Abu Hanifa Abu Mansur al-Maturidi Al-Halwani |
| Influenced: | Abu al-Yusr al-Bazdawi Najm al-Din 'Umar al-Nasafi 'Ala' al-Din al-Bukhari |
Abu al-Hasan 'Ali ibn Muhammad al-Bazdawi (ar|أبو الحسن علي بن محمد البَزدَوي) (c. 1010-1089 A.D.), known with the honorific title of Fakhr al-Islam (the pride of Islam), was a leading Hanafi scholar in the principles of Islamic jurisprudence. He is author of the acclaimed Kanz al-Wusul ila Ma'refat al-Usul (ar|کنز الوصول إلی معرفة الأصول|lit=The Treasure of Obtaining in Knowledge of Legal), popularly known as Usul al-Bazdawi, a seminal work in Hanafi Usul al-Fiqh.
'Abd al-Qadir ibn Abi al-Wafa' al-Qurashi (d. 775/1373) has praised him in his Hanafi biographical dictionary, Al-Jawahir al-Mudiyya fi Tabaqat al-Hanafiyya (ar|الجواهر المضية في طبقات الحنفية).[1]
His most famous book is Kanz al-Wusul ila Ma'refat al-Usul (ar|کنز الوصول إلی معرفة الأصول), popularly known as Usul al-Bazdawi, which is a seminal book in Hanafi Usul al-Fiqh and was a standard teaching text for centuries.[2]
In this work, he focuses on issues such as rules and methods of determining a variety of sources and methods for making the right decision and discourses on rules of working with texts, and so on. The Uzbek Academy of Sciences has more than a dozen copies of this work.
The book has generated numerous commentaries, the most popular of which being Kashf al-Asrar (ar|کشف الأسرار، شرح أصول البزدوي) by Abd al-'Aziz al-Bukhari (d. 730/1329).
His other works include:[3]
He also wrote on Tafsir (Qur'anic exegesis).
Al-Bazdawi studied under Shams al-A'imma 'Abd al-'Aziz al-Halwani (d. 456/1064) who was also a teacher to Al-Sarakhsi.[2]