Poipet is a Cambodian town on the Cambodia/Thailand border, in Ou Chrov district, Banteay Meanchey Province. It is a key crossing point between the two countries, and also extremely popular as a gambling destination as gambling is popular, but illegal in Thailand. There is a strip of casinos and hotels between the Cambodian and Thai passport control counters, enabling Thais to gamble in Cambodia without needing to go through Cambodian immigration.
Poipet is adjacent to the town of Aranya Pratet on the Thai side of the border.
The Poipet border is the terminus of the Thai railway system, though in 2006 it is proposed that there will be a building of a link between the Cambodian Railways at Sisophon to this town.