The Kingdom of Cambodia (pronounced /kæmˈboʊdɪə/, formerly known as Kampuchea (/kampuˈtɕiːə/), , transliterated: Preăh Réachéanachâkr Kâmpŭchea) is a country in South East Asia with a population of over 14 million people. The kingdom's capital and largest city is Phnom Penh. Cambodia is the successor state of the once powerful Hindu and Buddhist Khmer Empire, which ruled most of the Indochinese Peninsula between the eleventh and fourteenth centuries.

The country borders Thailand to its west and northwest, Laos to its northeast, and Vietnam to its east and southeast. In the south it faces the Gulf of Thailand. The geography of Cambodia is dominated by the Mekong river (colloquial Khmer: Tonle Thom or "the great river") and the Tonlé Sap ("the fresh water lake"), an important source of fish.

Cambodia's main industries are garments, tourism, and construction. In 2007, foreign visitors to Angkor Wat alone almost hit the 4 million mark.