Koh Kong (Khétt Kaôh Kŏng) is a province of Cambodia. The name means "Kŏng Island Province". Its capital is Koh Kong (city).

The province is an increasingly popular gateway to Cambodia from Hat Lek in eastern Thailand, in part due to the reasonably direct access to the port and beach resort town of Sihanoukville. The border is located at Cham Yeam, about 14km from Koh Kong.

Traveling to Koh Kong has become an enjoyable journey, where bridges were built, the first stage in 2002. A landmark of Koh Kong was made possible by L.Y.P. Group, the longest ever built bridge in Cambodia where you would want to experience the 1,900-meter crossing the sea connecting provincial town of Koh Kong to Koh Kong Resort and the international check point. In 2007 a new sealed road (National Route 48) was completed from the town to Sre Ambel on the Phnom Penh to Sihanoukville highway, including the 4 remaining river crossings where bridges were opened in May 2008 which are donations by the Thai government to Cambodia.