Jambyl or Zhambyl Region, formerly known as Dzhambul Region until 1991, is a region of Kazakhstan. Its capital is Taraz. The population of the region is 1,209,665; the city is 335,100. The region borders Kyrgyzstan, and is very near to Uzbekistan. Jambyl also borders three other provinces: Karaganda Region, Turkistan Region and Almaty Region. The total area is 144,200 square kilometres (55,700 sq mi). The province borders Lake Balkhash to its northeast. The province was named after the Kazakh akyn Jambyl Jabayev.

Kazakhstan is divided into 17 regions. The regions are further subdivided into districts. Three cities, Almaty, Shymkent, and the capital city Astana, do not belong to their surrounding regions.