An important element of the people’s worldview, moral and aesthetic values, and ethical norms are memorial ritual traditions. The honoring of ancestors is an integral part of the spiritual culture of Ukrainians, a form of establishing a symbolic spiritual connection with the dead through ritual and ceremonial reality. Memorial elements are present in the ritual practice of each of the cycles of the annual calendar and ritual circle, which is quite a natural thing. The relevance of the research issue, as an integral component of family rituals, which are key in human life and the best preserved of the entire complex of traditional folk rituals and, accordingly, most clearly illustrate the specifics of historical and ethnographic regions, is to study the worldview of the Ukrainian people in universal Slavic cultural and religious studies. The purpose of the study is to systematize the presented material on the commemoration of the dead in Ukrainian calendar feasts, to conduct a comprehensive scientific analysis and to identify national commonalities and regional differences in traditional memorial commemorations and rituals of our time. Commemoration is an ancient customary tradition of the Ukrainian people. In the calendar feasts of the annual cycle, they take a significant place among other rituals that confirm the people’s inherent love for their family and loyalty to the traditions that their ancestors have kept for thousands of years. It is no coincidence that they were organized with great respect, observing all the ritualistic acts. These were all subordinated to one goal: gratitude, honoring, appeasing and propitiating own ancestors. In the course of historical development, the memorial rituals of the Ukrainian ethnic group have been transformed by political, religious and other factors, and have undergone significant changes, although profoundly original ancient traditions have survived to nowadays. However, most of them have lost their magical and ritualistic meaning and are used mainly in an attributive, symbolic sense as observance of tradition, moral and ethical norms – attention, respect and love for the dead members of the family. Memorial practices gained particular importance during the Ukrainian-Russian war, when the mourning became not individualized, but a general mourning, a common grief.