[1] During the 16th century and before, Sisophon was known as Srey Saophon meaning in Khmer "Beautiful Lady" and it was a small district, belonging to Battambang Province.

In 1907 the French colonial administration of Cambodia negotiated with the Siamese government to cede Battambang Province and Siem Reap Province to the French Protectorate of Cambodia in exchange of Trat and Dan Sai and the names of these province reverted to their Khmer names.

In 1907 Srisophon was changed officially back to Serey Saophoan meaning in Khmer "Beautiful Freedom" implying freedom from the nearly 200 years of Siamese control.

Sisophon was made the capital city of Banteay Meanchey Province.

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