This paper discusses the essence of marriage in the world’s major religions (Judaism, Islam, Hinduism, Buddhism, religions of primitive peoples) and presents the customs and forms of concluding marriage as well as the ethics of marital cohabitation. The paper goes on to analyse selected statements by the teaching offce of the Church on the subject of marriage and family in various religions. The question of „mixed” or interreligious marriage is analysed from the perspective of religious rules, law and interreligious dialogue. Attention is drawn to the pastoral care shown by the Catholic Church to mixed marriages and families. This care is a manifestation of interreligious dialogue. Each religion has its own unique understanding of the institution of marriage and family. A mixed marriage brings together two different views of this institution: these views are mutually exclusive in some aspects and coincident in other aspects. Marriage and family undoubtedly constitute the foundation of societies representing various cultures and religions. The religious views on marriage exert an indisputable impact on the moral and social order of individual groups, communities and societies.