Toghtekin (Modern Turkish: Tuğtekin; Arabicised epithet: ظاهر الدين طغتكين Zahir ad-Din Toghtekin; died February 12, 1128), also spelled Tughtigin, was a Turkic military leader, who was atabeg of Damascus from 1104 to 1128. He was the founder of the Burid dynasty of Damascus.
Toghtekin was a junior officer to Tutush I, Seljuq ruler of Damascus and Syria. After the former's death in 1095, civil war erupted, and Toghtekin supported Tutush's son Duqaq as emir of the city against Radwan, the emir of Aleppo. In the chaotic years which ensued Toghtekin was sent to reconquer the town of Jebleh, which had rebelled against the qadi of Tripoli, but he was unable to accomplish his task.
On October 21, 1097, a Crusader army appeared at the gates of Antioch. The local emir, Yaghi-Siyan, though nominally under Radwan's suzerainty, appealed to Duqaq to send an armed force to their rescue. Duqaq sent Toghtekin, but on December 31, 1097, he was defeated by Bohemund of Taranto and Robert II of Flanders, and was forced to retreat. Another relief attempt was made by a joint force under Kerbogha, the emir of Mosul, and Toghtekin, which was also crushed by the Crusaders on June 28, 1098.
When the Crusaders moved southwards from the newly conquered Antioch, the qadi of Jebleh sold his town to Duqaq, who installed Toghtekin's son, Taj al-Muluk Buri, as its ruler. His tyrannical rule, however, led to his quick downfall. In 1103 Toghtekin was sent by Duqaq to take possession of Homs at the request of its inhabitants, after the emir Janah al-Dawla had been assassinated by order of Radwan.