Entropy and Religious Education offers an original and methodologically rigorous reconsideration of contemporary religious education through the conceptual lens of entropy. Rather than treating entropy as a deterministic explanation or a normative proof, the study employs it as a limited yet productive metaphor for understanding discontinuity, loss of attention, institutional erosion, and the fragility of pedagogical processes in an age shaped by digitalisation and fragmented experience. Combining conceptual analysis, theoretical synthesis, instructional design, and process-oriented thinking, the book explores how continuity, care, feedback, self-regulation, and sustainable educational practices may be strengthened within religious education. By carefully examining the possibilities and limits of interdisciplinary conceptual transfer, the study also contributes to broader debates in philosophy of education and curriculum theory. Addressed to researchers, teacher educators, and curriculum specialists, this work presents not a closed model, but a disciplined framework of questions for rethinking the future of religious education in a more critical, design-oriented, and pedagogically sustainable manner.