Kalutara District is one of the 25 districts of Sri Lanka, the second level administrative division of the country. The district is administered by a District Secretariat headed by a District Secretary appointed by the central government of Sri Lanka. The capital of the district is the city of Kalutara .

Kalutara or Kalutota is a major city in Kalutara District, Western Province, Sri Lanka. It is also the administrative capital of Kalutara District. It is located approximately 43 km (27 mi) south of the capital Colombo. The city holds a unique position for one of the four major rivers in Sri Lanka, the Kalu Ganga, which joins the sea at the centre of the city. Kaluthara is known for making rope, baskets, and other articles from the fibre of the coconut palm. The area also produces the Mangosteens, a fruit introduced from Malaysia in the 19th century.