The article deals with the Mongolian vocabulary for tanning of hides and skins in the Khalkha Mongolian, Buryat and Kalmyk languages. The terminology of saddle craft is one of the most significant lexical layers in the Mongolian languages. The rich and diverse microvocabulary of this group includes the names of leather artisans, their tools, the names of production processes, as well as traditional leather goods widely used in everyday life. Fixation, classification and linguistic analysis with detailed explanations are necessary because the terms of the saddlery craft are gradually forgotten and go into the passive vocabulary.