The Karen (/kəˈrɛn/ kə-REN), also known as the Kayin, are an ethnolinguistic group of peoples who speak Karenic languages and are indigenous to southern and southeastern Myanmar, including the Irrawaddy delta and Kayin State. The Karen account for around 6.69% of the Burmese population. The Karen consist of approximately 20 subgroups, the largest of whom are the S'gaw and the Pwo peoples. Other Karenic-speaking peoples like the Pa'O, Karenni, and the Kayan, have formed distinct identities.
The ethnic identity of the Karen peoples has significantly been shaped by British colonial rule, Christian missionaries, decolonisation, and sociopolitical developments in Myanmar. The group as a whole is heterogeneous and disparate, as many Karenic ethnic groups do not share a common language, culture, religion, or material characteristics. A pan-Karen ethnic identity is a relatively modern creation, established in the 19th century with the conversion of some Karen to Christianity, and mediated by British colonial policies and practices.