Ratnapura is a district of Sri Lanka in the Sabaragamuwa Province.

The gem-mining centre of Sri Lanka is also a major crossroad between southern plains and the hill country to the east. A bustling market city servicing most of the surrounding towns. Many of the prominent gem dealers in Sri Lanka operate from this town. There is a route to Sri Pada from Ratnapura direction. Excursions include Sinharaja Forest Reserve and Udawalawe National Park. The surrounding area is a popular trekking destination and a good place for bird watching.