Jalal al-Mulk Ali ibn Muhammad ibn Ammar (Arabic: جلال الملك علي بن محمد بن عمار) was the ruler (qadi) of Tripoli during the First Crusade.
[1] The dynasty had been founded by his uncle, Amin al-Dawla Abu Talib al-Hasan ibn Ammar, who as qadi of Tripoli had declared himself independent from the Fatimid Caliphate c.
[2] Ali came to power in Tripoli after his uncle's death in 1072, after a brief succession struggle with his brother, whom he expelled from the city.
The Siege of Arqa, which lasted from 14 February to 13 May 1099, was a failure, and Raymond was eventually persuaded to leave the city in the hands of Tripoli.
Ali did not live to see the long Siege of Tripoli, being succeeded by his brother Fakhr al-Mulk ibn Ammar.