[1] Seafaring Muslim traders are known to have made stops at ports in the Champa Kingdom en route to China very early in the history of Islam.

After the Tang Dynasty collapsed, Abbasid Caliphate continued trading with the Vietnamese in Annam, later with Đại Việt kingdom.

[2] On the same time, the Arab traders also dealt with the Chams in Central Vietnam, by then was still ruling independently as Champa, whose awareness of Islam was earlier than its Vietnamese counterparts.

Saudi Arabia, alongside North Yemen and several Gulf nations at the time also hosted a small number of Vietnamese refugees of Cham and Arab origin in 1980s due to religious persecution by the communist regime.

[9] There are over 10–20,000 Vietnamese workers in Saudi Arabia, which is considered small compared to Filipino and South Asian communities.