The presentation analyses the sign system and semiosphere of apotropaic signs, characteristic of the decorations of Lithuanian folk sashes which tradition goes back into pre-Christian times. These sashes were used during weddings, a critical stage in the human life circle.The relationship between the reality interpretation and representation in magic-symbolic way are determined here by the mythic-poetical tradition. Signsʼ connection with the cosmological concept of the world and the context of folkloric worldview is explored basing on structural semantics and ethnosemiotics, the Tartu-Moscow school of semiotics. Greimas has also examined the images of Lithuanian folklore as an element of codic, symbolic, mythic-poetical signs system.The ethnological research enabled me to trace the authentic folk weaver’s classification of signs, which comprehensively includes the form of signs and their folk names into inseparable complex. The examination of these signs’ types and subtypes, variants and invariants, synonyms and analogues reveal this system's variability, multimodality, complexity and creativity. Systemic analysis uncovers the existence of complex semantic chains of associations between the poetic images of these signs and their folk cultural context as a specific mythic-folkloric reality. The similarities of these signs complexes in the neighboring cultures indicates the cross-cultural universality and archaism of this system. On other hand the actualization of investigated signs in contemporary local, folk-cultural, heritage, artistic and subcultural communities show a very complicated relations between the ancient and modern semiotic realities and their intertextuality. This requires to search for more complex multivocal and multimodal explanations of semiotic world of contemporary culture.