Ulaanbaatar Railway
Mongolian-Russian joint railway operator
The Mongolian-Russian Joint Stock Company Ulaanbaatar Railway (UBTZ) is Mongolia's national railway operator. It was established on 6 June 1949 under an agreement between Mongolia and the Soviet Union, with each side holding an equal 50 percent stake; the Russian stake is now held through Russian Railways (Interfax, 4 September 2015; CAREC Railway Sector Assessment for Mongolia, 2021).
UBTZ operates 1,815 km of broad-gauge (1,520 mm) lines, centred on the 1,110 km Sukhbaatar to Zamyn-Uud line running north to south from the Russian border to the Chinese border, plus the 238 km Bayan Tumen line between Choibalsan and Ereentsav in the northeast (CAREC Railway Sector Assessment for Mongolia, 2021). It is distinct from Mongolian Railways, the separate state company built for new mining corridors.
PEOPLE
Luvsandagva Purevbaatar
Chairman - named as Chairman in the Ulaanbaatar Railway company profile (Wikipedia, citing UBTZ)
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RECORD
Ownership and the Russian stake - DOCUMENTED
UBTZ was formed on 6 June 1949 under a Soviet-Mongolian agreement with equal stakes in its statutory capital. Before August 2009 the Russian side was represented by the Federal Railway Authority; in 2009 Russian Railways (RZD) received trust management of Russia's 50 percent stake for five years to improve management effectiveness, later extended by presidential decree to 17 December 2019 (Interfax, 4 September 2015; Russian Railways meeting report, 2 August 2011).
The network in the CAREC assessment - DOCUMENTED
The CAREC assessment records UBTZ operating 1,815 km of broad-gauge railways, including spurs to Erdenet (copper), Bor-Ondor (fluorspar), Zuunbayan (oil), Shariin Gol and Baganuur (coal). The Ulaanbaatar to Altanbulag section was completed in 1950 and the Ulaanbaatar to Zamyn-Uud section in 1955; after the collapse of the Soviet Union the Soviet shareholding was taken over by the Russian Federation represented by Russian Railways (CAREC Railway Sector Assessment for Mongolia, May 2021).
Modernisation strategy with RZD - 2014
In September 2014 UBTZ and Russian Railways agreed a modernisation strategy covering the 1,100 km north-south route from Sukhbaatar to Zamyn-Uud, including possible electrification or a second track, in the presence of Presidents Elbegdorj and Putin. RZD noted UBTZ was established in 1949, equally owned by the Mongolian and Soviet, subsequently Russian, governments, and that RZD is responsible for the Russian state's stake in the 1,815 km network (Railway Gazette, 4 September 2014).
National railway freight in 2024 - DOCUMENTED
Mongolia's National Statistics Office reported that railway transport as a whole carried 45.9 million tonnes of freight in 2024, up 9.4 million tonnes or 25.8 percent on 2023, with freight turnover of 21,274.7 million tonne-kilometres and 2,132,900 passengers carried (NSO Transport Statistics, January-December 2024, published 17 February 2025). The figure covers all railway transport in Mongolia, not UBTZ alone.
A filled seal is documented. An open seal is an allegation, source named.
How to read this page. Every line names its source. A line marked ALLEGATION is a claim already published by the named source and already in the public record. Decode Mongolia republishes it as reported, with the source named, and has not verified it. An allegation is not a finding, and nothing on this page is proof of wrongdoing.