This volume collects studies exploring the relationship of Christians and Muslims in everyday life in Early Islamic Egypt (642–10th c.) focusing mainly, but not exclusively on administrative and social history. The contributions concentrate on the papyrological documentation preserved in Greek, Coptic, and Arabic. By doing so, this book transcends traditional disciplinary boundaries and offers results based on a holistic view of the documentary material. The articles of this volume discuss various aspects of change and continuity from Byzantine to Islamic Egypt and offer also the (re)edition of 23 papyrus documents in Greek, Coptic, and Arabic. The authors provide a showcase of recent papyrological research on this under-studied, but dynamically evolving field.