The presentation addresses current questions regarding the ecclesiological location of Eastern Catholic Churches. This ecumenically controversial topic has also ist development and ambivalent aspects within Catholicism. Although, according to the Second Vatican Council, Eastern Catholic Churches have the same dignity as the Latin Church and their theological, liturgical and canonical heritage forms part of the patrimony of the universal Church, they are often considered to be communities with a limited special status. From the point of view of Orthodox and Oriental Churches, Eastern Catholic Churches are often seen as an anomaly or as stumbling blocks for ecumenism, as they are interpreted in the light of "uniatism". In fact, these churches find themselves in a complex field between different influences and show an internal plurality that distinguishes them from other churches. The view that they are "caught between two stools" is, however, conditioned by confessional perspectives that are gradually being questioned. Representatives of Eastern Catholic Churches are increasingly taking part in professional and ecumenical discussions. This applies in particular to the Ukrainian Greek Catholic Church, the largest of the Eastern Catholic Churches. The history of these churches shows that for centuries they have played a significant role in shaping the ecclesiastical landscape of Central and Eastern Europe. Their role as „bridges" in relation to other denominations is justifiably being questioned. But the question arises as to whether they can contribute to a broadening of horizons within Catholicism, offering new potential for ecumenical dialogue, and also benefit from it for their own development.