Rukn ad-Din Baybars al-Ala'i al-Hajib was a prominent mamluk of Bahri sultan al-Nasir Muhammad in the early 14th-century.
He served as the governor of a number of provinces throughout the Cairo-based Mamluk Sultanate.
The marble slab containing the inscription that honored Baybars' restoration work is currently located in the Great Mosque of Gaza.
His term ended in late 1309-early 1310 with the accession of al-Muzaffar Baybars to the sultanate after quietly ousting an-Nasir Muhammad.
[1] Baybars al-Ala'i remained loyal to the latter during his exile in al-Karak and aided an-Nasir Muhammad's return to the throne by 1310.