In 1989–1990, five decorative belts worn by the Xianbei Period nomads were excavated from the Karban I cemetery in the Chemalsky District, Altai Republic. Their details (33 plaques, five buckles, six “units”, and two “pendant tips”) were found in four undisturbed graves of males (mounds 11, 27, 33, and 39). They are described with regard to function, decoration, and chronology. Parallels from the Altai and adjacent territories, dating to the late 1st millennium BC–early 1st millennium AD, are listed. A more precise attribution is the Early Xianbei Period (100–300 AD), correlating with the Bulan-Koby culture of the Altai. Available facts suggest that the style of these artifacts was influenced by the Xiongnu and Xianbei traditions. On the basis of the finds in situ, several variants of belt sets, some of which are hitherto unknown, have been reconstructed. The composition of the belts is unrelated to the owners’ age and evidently mirrors their personal preferences. The results demonstrate the social relevance of the belts, since most were found in burials of top-ranking males.