Kataragama deviyo is a guardian deity of Sri Lanka. A popular deity who is considered to be very powerful, shrines dedicated to Kataragama deviyo are found in many places of the country. Sinhalese Buddhists believe him also as a divine patron of the Buddha Sasana in Sri Lanka. An ancient temple dedicated to God Kataragama, known as Ruhunu Maha Kataragama Devalaya is situated in the South-Eastern town of Kataragama in Monaragala District of Uva Province.

The Sinhalese people, also known as the Sinhalese or Sinhala people are an Indo-Aryan ethno-linguistic group native to the island of Sri Lanka. They are the largest ethnic group in Sri Lanka, constituting about 75% of the Sri Lankan population and number more than 15.2 million.