The economy of Sihanoukville is based primarily in its port for import and exports to the national economy. It has also an oil container port and cargo facilities.
Other activities in the economy of the province include fishing, aquaculture, agriculture, mining, oil, factories (frozen shrimp processing, garment and Angkor Beer), real estate and tourism.
In the last years the increasing of tourism has improved the construction of hotels and tourism infrastructures in the province. Foreign and national investment has been proven by the presence of newcomers to the city