Arab poet attached to the Ayyūbid dynasty of Cairo.

Bahāʾ al-Dīn Zuhayr studied at Qūṣ, a centre of trade and scholarship in Upper Egypt, and eventually moved to Cairo. There he entered the service of the Ayyūbid prince al-Ṣāliḥ Ayyūb (Ṣāliḥ Ayyūb, aṣ-), serving as the prince's secretary on a campaign in Syria in 1232. During an Ayyūbid family dispute in 1239, al-Ṣāliḥ Ayyūb was imprisoned at Nāblus, Palestine, and Bahāʾ al-Dīn Zuhayr remained nearby. He became vizier the following year, when al-Ṣāliḥ Ayyūb was brought to power in Egypt, but the poet fell from favour in the last year of the sultan's life. Rebuffed also by the Ayyūbid ruler of Damascus and Aleppo, he lived in Cairo in obscurity during his last years.

Bahāʾ al-Dīn Zuhayr's divan (collection of poems) was published in an Arabic edition with an English translation by E.H. Palmer, The Poetical Works of Behá-ed-Dín Zoheir of Egypt, 2 vol. (1876–77). Among his poems are qasida (odes) of praise to members of the Ayyūbid dynasty or to officials; other poems include those devoted to love found and lost and to friendship.