The authors investigate trends and patterns in interreligious partnerships in Austria over the period 1971-2001. Specifically, they examine how individual characteristics in particular educational attainment and religious affiliation shape interreligious  partnership patterns; the role of educational assortative mating on trends in interreligious unions; and how changing religious  composition in region of residence influences interreligious partnership formation. they find that while interreligious partnerships have increased as a whole, there has been substantial variation by religious group and gender. Int he meantime, the rise in educational attainment has become less important over time.