A clearly defined element inherent in funeral traditions of the Finno-Ugric cultures in the period of the Early Iron Age to the Middle Ages, which was specified by V.F. Gening as a “sacrififcial complex”, is considered in the study. The main features of the “sacrificial complexes” fixed in the Pyanoborye burial grounds in the Vyatka River basin and dated by the 1^st to 5^th centuries AD are characterized. A comparative analysis with synchronous monuments of the Kama-Vyatka-Volga interfluve area is conducted. The “sacrificial complex” word combination is used in the article as a descriptive term. The diversity of the concept’ semantics as applied to the materials from the Vyatka River region is pointed out by the author.