The paper presents a special category of Mongolic loanwords - the Buddhist and Shamanistic terminology. There are different semantic groups including the names of religious abstractions (as sin, paradise, soul, hell, etc.), the names of religious ceremonies, names of deities, designations of Buddhist ranks, terms designating the buildings of Buddhist monasteries, accessories used during the ceremonies and the terms pertaining to mythology and folk religion (as demon, evil spirit). A special category includes the original Mongolic shamanistic words using in Tuvan Buddhist terminology. From etymological point of view, the Mongolic loanwords are of Mongolic, Tibetan, Turkic and Sanskrit origin. Accordig to phonetic features it is possible to determine the period (early or later) of borrowing.