Al-Būṣīrī (Arabic: ابو عبد الله محمد بن سعيد بن حماد الصنهاجي البوصيري, romanized: Abū ʿAbdallāh Muhammad ibn Saʿīd al-Ṣanhājī al-Būṣīrī; 1212–1294) was a Sanhaji Berber Muslim poet belonging to the Shadhiliyya order, being direct disciple of Sheikh Abul Abbas al-Mursi. His magnum opus, the Qaṣīda al-Burda ("Poem of the Mantle"), in praise of the Islamic prophet Muhammad, is one of the most popular Islamic poems praising the prophet, and it is in Arabic language, as much as his other ode named Al-Hamziyya.
He was born in Dalāṣ, a small town in Beni Suef Governorate in Egypt (despite the similar name, this town is not to be confused with Dellys, in Algeria), and wrote under the patronage of Ibn Hinna, the vizier. His father was from Abusir, hence his nisba Al-Būṣīrī. Sometimes he also used his nisbe Dalāṣīrī as his mother belonged to the town of Dalāṣ.
In his Qaṣīda al-Burda, he claims that Muhammad cured him of paralysis by appearing to him in a dream and wrapping him in a mantle. The poem has had a unique history (cf. I. Goldziher in Revue de l'histoire des religions, vol. xxxi. pp. 304 ff.). It has been frequently ed and made the basis for other poems, and new poems have been made by interpolating four or six lines after each line of the original. It has been published with English translation by Faizullabhai (Bombay, 1893), with French translation by René Basset (Paris, 1894), with German translation by C. A. Ralfs (Vienna, 1860), and in other languages elsewhere.