Qazaqstan Temır Joly (Kazakh: Қазақстан Темір Жолы [qɑzɑqˈstɑn tʲeˈmɘr ʒoˈɫɤ]) is the national railway company of Kazakhstan.

[1][2] Founded by the government in 2002 as a joint stock company, KTZ’s task is to develop, operate, and maintain railway transportation in Kazakhstan.

While this provides a smooth transit at international borders to countries of the former Soviet Union, the railway in China has the standard gauge of 1,435 mm (4 ft 8+1⁄2 in); thus there is a break-of-gauge at Dostyk and at Khorgas/Altynkol.

[8] The FEZ "Khorgos-Eastern Gate" is a logistics center for the distribution of cargo flows on the New Silk Road near Nurkent and Khorgos, and further integrates Kazakhstan into the global transport and trade system, particularly between China and the European Union.

[8] The potential of Kazakhstan to act as a transit in the trade between China, Europe, and even the eastern coast of America, as envisioned in the Trans-Asian Railway proposal, has not yet been fulfilled.

Current rail transport between China and Europe as part of the Eurasian Land Bridge goes over the Trans-Siberian railway, is lengthy, and requires bogie exchanges.

[9] KTZ is engaging on a major railroad project to link China and Southeast Asia to Europe for a length of 3,900 kilometres (2,400 mi).

[18] Kazakhstan Temir Joly & AD Ports Group (ADX: ADPORTS) signed a joint venture agreement in December 2023 to improve rail connectivity, maritime shipping services, the growth of operations in Kazakhstan's ports, and to speed up digital transformation and connectivity in Central Asia.