Tây Nguyên, translated as Western Highlands and sometimes also called Central Highlands, is one of the regions of Vietnam. It contains the provinces of Đắk Lắk, Đắk Nông, Gia Lai, Kon Tum, Lâm Đồng.
This region is sometimes referred to as Cao nguyên Trung bộ (literally "Midland Highlands"), and was referred to during the Republic of Vietnam as Cao nguyên Trung phần (literally "Central Highlands").
The native inhabitants of the Central Highlands are the Degar (Montagnard) peoples. Vietnam conquered and invaded the area during its "march to the south" (Nam tiến). Ethnic Vietnamese (Kinh) people now outnumber the indigenous Degars after state sponsored colonization directed by both the government of South Vietnam and the current Communist government of unified Vietnam. The Montagnards have fought against and resisted all Vietnamese invaders, from the anti-Communist South Vietnamese government, the Vietcong, to the Communist government of unified Vietnam.
The Champa state and Chams in the lowlands were traditional suzerains whom the Montagnards in the highlands acknowledged as their lords, while autonomy was held by the Montagnards. After World War II concept of "Nam tiến" and the southward conquest was celebrated by Vietnamese scholars. The Pays Montagnard du Sud-Indochinois was the name of the Central Highlands from 1946 under French Indochina.
Up until French rule, the Central Highlands was almost never entered by the Vietnamese since they viewed it as a savage (Moi-Montaganrd) populated area with fierce animals like tigers, "poisoned water" and "evil malevolent spirits", but the Vietnamese expressed interest in the land after the French transformed it into a profitable plantation area to grow crops on, in addition to the natural resources from the forests, minerals and rich earth and realization of its crucial geographical importance.