The Dörbet (Mongol: Дөрвөд, lit. "the Fours") is the second largest subgroup of the Mongol people in modern Mongolia and was one major tribe of the Four Oirat confederation in 15th-18th century. In early times, the Dörbet and the Dzungars were ruled by collateral branches of the Choros. The Do'rbets are distributed among the western provinces of Mongolia, Kalmykia, and small portion in Heilongjiang, China. In Mongolia, Dörbets are centered in the Uvs province.

A Dörben clan of Duwa Sohor's four sons existed within the Khamag Mongol confederation in the 12th century; but their relation with the Dörbets is unclear. However, the Dörbets appeared in the early 15th century as part of the Four Oirats.

In the 17th century, the leader of Do'rbets was Baatar Dalai Taishi (d.1637). In order to unite the Oirad Mongols, Dalai Taishi used the method of marriage of convenience; Dalai Taishi and Khoshut leader Güshi Khan married the Torgut and Kho Orluk sisters. During the Dalai Taishi period (circa 1625), the Oirat tribes lived in harmony.