Mean Chey is an administrative district (khan) located in the south-eastern part of Phnom Penh, Cambodia. As of 2019, due to boundary changes, its population decreased from 2008 but is the second most populous district of Phnom Penh.

Phnom Penh is the capital and most populous city of Cambodia. It has been the national capital since the French protectorate of Cambodia and has grown to become the nation's primate city and its economic, industrial, and cultural centre. Before Phnom Penh became capital city, Oudong was the capital of the country.