Mustafa Agha Barbar (died April 1835) was the mutasallim of Tripoli.
In 1803, he visited the Wali of Sidon Eyalet, Jezzar Pasha in Acre and pledged allegiance to him. While he was away, the Wali of Damascus Eyalet, Abdullah Pasha al-Azm launched an assault against Tripoli.[1]
Barbar defected from the Ottomans to Egypt when Ibrahim Pasha's forces invaded Ottoman Syria in 1831. He was allowed to continue his reign over Tripoli. On 1 Arpil 1832, an Ottoman force backed by Alawite militiamen under Zahir al-Mahfuz's leadership, attempted to oust Barbar from Tripoli, but failed. Zahir was wounded and later died.[2]
He was dismissed in 1833 by the Egyptian authorities for continuing to levy a burdensome tax from population that had been abolished by Egypt.[3] He died at his home in April 1835.[4]