al-Mansur Lajin

Lajin (died 1299) was a Mamluk of possibly Circassian origin, bought by Qalawun, whose daughter he married. He served as governor of Damascus from 1280 and took part in the assassination of Sultan al-Ashraf Khalil in 1293. He persuaded Kitbugha to seize the throne, then in 1296 forced him aside and became sultan.

Favoritism toward his mamluk Mankutumur, made atabeg over senior emirs, led to his murder with Mankutumur in Cairo in 1299, after which al-Nasir Muhammad returned.