As a result of the Covid-19 pandemic and the range of measures taken by various governments, large parts of society were almost brought to a standstill in 2020. Even the religious services of churches and other religions could only be celebrated, if at all, under conditions that were previously unimaginable. These circumstances raise questions in the area of Liturgical Studies as a theological discipline. In 53 contributions (24 of which are in English), Catholic – Latin and Eastern, Orthodox, Protestant, Anglican, and Jewish authors from Europe, Asia, Africa, North and South America, and from Australia and the Far East, provide insights into the liturgical practices of their respective churches and communities under these extraordinary conditions. The international, ecumenical, and interdisciplinary breadth of the contributions provide critical reflections on the experiences gained from the still ongoing pandemic, and provide constructive proposals for possible future times of crisis. In addition, relevant documents are made available in an attachment and in an online appendix. Prof. Dr. Lic.theol. Hans-Jürgen FEULNER Mag.theol. Elias HASLWANTER Department for Liturgical Studies and Sacramental Theology at the Faculty of Catholic Theology of the University of Vienna