The Sinhalese people (Sinhala: සිංහල ජනතාව, romanized: Sinhala Janathāva), 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.
The Sinhalese people speak Sinhala, an insular Indo-Aryan language. Sinhalese people are predominantly Theravada Buddhists, although a significant minority of Sinhalese follow branches of Christianity and other religions. Since 1815, Sinhalese people were broadly divided into two subgroups: the up-country Sinhalese of the central mountainous regions, and the low-country Sinhalese of the coastal regions. Although both groups speak the same language, they are distinguished as they observe different cultural customs.