This study explores the universal symbolic functions of circular and spherical forms in wedding and funeral ceremonies across world cultures using a multidisciplinary approach. The article analyzes how these forms are structured during key transitional stages of human life, based on van Gennep's rites of passage, Turner's liminality theory, and Jung's archetypes theory. In wedding ceremonies, circular dances, table arrangements, rings, and other symbols embody unity, eternity, and harmony. Azerbaijani traditions such as fastening a silver belt and red ribbon are of particular interest. In funeral rituals, circular forms express the transformation of the soul, continuity, and the idea of eternity. Prayer circles, candle rings, and motifs on tombstones carry similar symbolic meanings across different cultures.

The research demonstrates that these forms are not merely aesthetic elements but universal symbols with social, psychological, and spiritual functions. In the modern era, traditional symbolism continues to persist in new forms—in virtual spaces, digital platforms, and contemporary memorial designs. Circular and spherical forms serve as visual expressions of human connection with the cosmos, earth, and the divine. The study's findings highlight the profound psychological and ontological significance of these forms, transcending not only cultural boundaries but also time. Future research directions include digital anthropology, neuroanthropology, and ecological anthropology.