Ratnapura is a major city in Sri Lanka. It is the capital city of Sabaragamuwa Province, as well as the Ratnapura District, and is a traditional centre for the Sri Lankan gem trade. It is located on the Kalu Ganga in south-central Sri Lanka, some 101 km (63 mi) southeast of the country's capital, Colombo. Ratnapura is also spelled as Rathnapura. The name 'Ratnapura' is a Sanskrit word meaning "city of gems", from the Sanskrit words pura and ratna (gemstone). Over 2000 years ago, when the first Buddhist monks arrived here from the north eastern provinces of India namely Bodh-Gaya, Varanasi and Pataliputra, they not only brought with them the Buddhist religion, but since their teachings were mainly in Sanskrit and Pali they also influenced the local language. While candy produced from the jaggery palm is traditionally known in this region as ratnapura, it is more likely that the candy was named for the locale rather than vice versa.

Maha Saman Devalaya or the Great Saman Temple a shrine dedicated to deity Saman, situated at Ratnapura, Sri Lanka who is the presiding deity of the Sri Pada Mountain (Adam's Peak) which is also called Samanthakuta meaning the mountain of Saman which is believed to have the left foot impression of Lord Buddha which he kept in his visit to Sri Lanka