On the basis of the European Value Study (EVS), this research explores values towards family, marriage and religion that are adopted by adults of five different religious groups: Jews, Muslims, Orthodox Christians, Roman Catholics and irreligious or atheists. 42 questions derived from the European Value Questionnaire were employed on the importanceof family and religion, the conditions for the successful marriage, values that parents have to transmit to their children, attendance to religious ceremonies as related to prayer and other important life facts suchas death, wedding and birth, along with demographic issues. 132 adults participated in the research project from the broader area of Athens (59.8% females). Comparisons among all religious groups present astronger acceptance of family as compared with religion, of God in life and of religion as giving answers to fundamental life questions; this finding does not hold true for the group of irreligious-atheists, as expected. Religion seems to differentiate values for Jews and Muslims who accept higher importance of God in life, as compared to Orthodox Christians and Roman Catholics, while the group of irreligious-atheists accepts the least importance of God.