The durian (/ˈdjʊəriən, -æn/) is the fruit of trees from the genus Durio belonging to the Malvaceae, a large family which includes hibiscus, okra, cotton, mallows, and linden trees. Widely known and revered in Southeast Asia as the "King of Fruits", the fruit is distinctive for its large size, unique odour, and formidable thorn-covered husk. The fruit can grow up to 30 centimetres (12 in) long and 15 centimetres (6 in) in diameter, and typically weighs one to three kilograms (2 to 7 lb). Its shape ranges from oblong to round, the colour of its husk green to brown, and its flesh pale-yellow to red, depending on the species.
The durian is sometimes featured in the popular culture of Singapore. The durian was a nickname for the protagonist of the Singaporean TV comedy Durian King, and the oddly shaped Esplanade building in Singapore is often called "The Durian" by locals. Despite its great local popularity, the raw fruit is forbidden from some establishments such as hotels, subways and airports, including public transportation in Singapore.