Mongolian shamanism, more broadly called the Mongolian folk religion, or occasionally Tengerism, refers to the animistic and shamanic ethnic religion that has been practiced in Mongolia and its surrounding areas (including Buryatia and Inner Mongolia) at least since the age of recorded history. In the earliest known stages it was intricately tied to all other aspects of social life and to the tribal organization of Mongolian society. Along the way, it has become influenced by and mingled with Buddhism. During the socialist years of the twentieth century it was heavily repressed and has since made a comeback.
Yellow shamanism is the term used to designate the particular version of Mongolian shamanism which adopts the expressive style of Buddhism. "Yellow" indicates Buddhism in Mongolia, since most Buddhists there belong to what is called the Gelug or "Yellow sect" of Tibetan Buddhism, whose members wear yellow hats during services. The term also serves to distinguish it from a form of shamanism not influenced by Buddhism (according to its adherents), called black shamanism.
Shamanism (/ˈʃɑːmən/ SHAH-mən or /ˈʃeɪmən/ SHAY-mən) is a practice that involves a practitioner reaching altered states of consciousness in order to perceive and interact with a spirit world and channel these transcendental energies into this world. A shaman is a person regarded as having access to, and influence in, the world of benevolent and malevolent spirits, who typically enters into a trance state during a ritual, and practices divination and healing.
The word "shaman" probably originates from the Tungusic Evenki language of North Asia. According to ethnolinguist Juha Janhunen, "the word is attested in all of the Tungusic idioms" such as Negidal, Lamut, Udehe/Orochi, Nanai, Ilcha, Orok, Manchu and Ulcha, and "nothing seems to contradict the assumption that the meaning 'shaman' also derives from Proto-Tungusic" and may have roots that extend back in time at least two millennia. The term was introduced to the west after Russian forces conquered the shamanistic Khanate of Kazan in 1552. The term "shamanism" was first applied by western anthropologists to the ancient religion of the Turks and Mongols, as well as those of the neighboring Tungusic and Samoyedic-speaking peoples. Upon learning more about religious traditions across the world, some anthropologists began to also use the term to describe unrelated magico-religious practices found within the ethnic religions of other parts of Asia, Africa, Australasia and the Americas, as they believed these practices to be similar to one another.