The Chams (Cham: ꨌꩌ, چام, cam), or Champa people (Cham: ꨂꨣꩃ ꨌꩌꨛꨩ, اوراڠ چمڤا, Urang Campa; Vietnamese: Người Chăm or Người Chàm; Khmer: ជនជាតិចាម, Chônchéatĕ Cham), are an Austronesian ethnic group in Southeast Asia and are the original inhabitants of central Vietnam and coastal Cambodia before the arrival of the Cambodians and Vietnamese, during the expansion of the Khmer Empire (802–1431) and the Vietnamese conquest of Champa (11th–19th century).