Anlong Veng (Khmer: អន្លង់វែង, Ânlông Vêng [ɑnluŋ ʋɛːŋ]) is a district (srok) in Oddar Meanchey province in Cambodia.

[2] It is estimated that 35% of the population in Anlong Veng were former Khmer Rouge soldiers including the Maoist dictator Pol Pot (Saloth Sar).

It was the last stronghold of the Khmer Rouge to come under government control in 1998 and the final resting place of Pol Pot.

In the 1990s the Khmer Rouge still controlled Anlong Veng, where there was one of the first "Killing Fields" after the fall of "Democratic Kampuchea".

There is a still not excavated site in a forest with landmines in the Dângrêk Mountains, located about 6 km out of Anlong Veng where 3,000 people were allegedly killed by the Khmer Rouge for having become "corrupted" as late as between 1993 and 1997.