Tüdevtei ( ), also spelt Tüdeutei or Tüdebhtei, is a sum of Zavkhan Province in western Mongolia. Sum centre is 17 km South of Oigon Lake. In 2005, its population was 2,003.Zavkhan Aimag: Сумдын Танилцуулга (Introduction to the Sums)

Administrative divisions The district is divided into five bags, which are: Argalant Bayantsagaan Oigon Sharnuruu Tsorgo

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