Shams al-Din al-Ansari al-Dimashqi or simply al-Dimashqi (Arabic: شمس الدين الأنصاري الدمشقي) (1256–1327) was a medieval Arab geographer, completing his main work in 1300. Born in Damascus — as his name "Dimashqi" implies—he mostly wrote of his native land, the Greater Syria (Bilad ash-Sham), upon the complete withdrawal of the Crusaders. He became a contemporary of the Mamluk sultan Baibars, the general who led the Muslims in war against the Crusaders. His work is of value in connection with the Crusader Chronicles. He died while in Safad, in 1327.
Al-Dimashqi (1325) gives very detailed accounts of each island in the Malay archipelago, its population, flora, fauna and customs. He mentions "the country of Champa ... is inhabited by Muslims and idolaters. The Islam came there during the time of Caliph Uthman ... and Ali, many Muslims who were expelled by the Umayyads and by Al-Hajjaj, fled there, and since then a majority of the Cham have embraced Islam."
Of their rivals the Khmer, Al-Dimashqi (1325) mentions they inhabit the island of Komor (Khmer), also called Malay Island, a land of many towns and cities, rich-dense forests with huge, tall trees, and white elephants; they supplemented their income from the trade routes not only by exporting ivory and aloe, but also by engaging in piracy and raiding on Muslim and Chinese shipping.