Sisophon was a changwat (province) of Thailand. In 1906 it was ceded to French Indochina. It is now part of Cambodia and known as Banteay Meanchey.

During the 16th Century and beyond, Sisophon was known as Srey Saophoan meaning in Khmer "Beautiful Lady" and it was a small district, belonging in Battambang Province.

Onward to the 17th century, the Siamese later known to the world as Thai, took over Battambang Province, Siem Reap Province in a successful military campaign.

Battambang Province and Siem Reap province was renamed as Phra Dambang and Siam Nakorn respectfully. Therefore, Srey Saophoan was renamed as Srisophon in the Siamese/Thai language.

When the French imperialists came in the 1900s, the Siamese were forced to cede Battambang Province and Siem Reap Province back to Cambodia.

So the name of these province were changed back to their Khmer names. Srisophon was changed officially back to Serey Saophoan meaning in Khmer "Beautiful Freedom" as implying freedom from the Siamese control for a long time of nearly 200 years.

After the Khmer Rouge reign, Battambang Province was broken up into two provinces. Those provinces are the remaining Battambang Province and Banteay Meanchey Province.

Sisophon was made the capital city of Banteay Meanchey Province.

Banteay Meanchey is a Cambodian province. It is in the northwest of the country, and its capital is Sisophon. The town Poipet is the border crossing to Thailand.

Banteay Meanchey means in the Khmer Language "Fortress of Victory".

Banteay Meanchey is located in the northwest of the country, bordering Thailand to the north and west. Neighboring provinces are Oddar Meancheay to the northeast, Siem Reap to the east, and Battambang to the south. To the west is the Thai province Sa Kaeo, to the north Buriram.

Poipet is a town on the Thailand/Cambodia border. 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 Thai and Cambodian passport control counters, enabling Thais to gamble in Cambodia without needing to go through Cambodian immigration.

Poipet is adjacent to the city of Aranya Pratet on the Thai side of the border.

The province is mostly covered by extensive lowlands, with only a few uplands to the north and east. Main rivers are the Mongkol Borei River and the Sisophon River

The area was part of the extensive Khmer empire, with its most notable remains the Banteay Chhmar temple in the north of the province, built in 12th century towards the 13th century.

In the 17th century Siam took control over Cambodia, and made the area of the modern province part of Sisophon Province. In 1907 Siam had to cede control to the French, and it was then included into Battambang Province.

In 1988 the province Banteay Meanchey was split off from Battambang, originally consisting of the five districts Mongkol Borei, Thmar Pouk, Serei Sophorn, Preah Netpreah and Phnom Srok