Horse sacrifice is the ritual killing and offering of a horse, usually as part of a religious or cultural ritual. Horse sacrifices were common throughout Eurasia with the domestication of the horse and continuing up until the spread of Abrahamic religions, or in some places like Mongolia, of Buddhism. The practice is rarely observed in some cultures[which?] even today.
Many ethnic religions from Indo-European speaking peoples show evidence for horse sacrifice, and comparative mythology suggests that they derive from a purported Proto-Indo-European ritual and common root, though the practice is also observed among non-Indo-European speaking peoples, especially in nomadic societies from the Eurasian steppe.