Prey Veng (Khmer: ខេត្តព្រៃវែង) is a province (khaet) of Cambodia.
The capital is Prey Veng town. In 2008 it had a total population of 947,357 people. This densely populated agricultural region is located on the east bank of the Mekong. The name literally means "long forest" in khmer, but the last great forests have gradually disappeared there over 30 years to provide for agricultural land.
The provincial capital is located on the National Road 11 between Neak Leung and Kampong Cham. It is located about 2 and half hours by road from Phnom Penh and 3 hours from Ho Chi Minh City. This quaint town is off the usual tourist trail and is uncrowded. It houses several old dilapidated colonial homes. There is a large lake west of the city which is dry from March to August.