This open access book explores the resilience of Jewish civil society organizing in Ukraine during the tumultuous early months of the 2022 Russian full-scale invasion. Developed in collaboration with Paideia - the European Institute for Jewish Studies in Sweden, the research chronicles a project that involved Ukrainian Jewish communities during wartime through Paideia’s alumni network. Drawing on rich empirical data, the authors examine the multifaceted work of Jewish organizations and organizing efforts, from sustaining rituals to engaging in humanitarian work. The book examines single case studies and broader cross-organizational analyses, shedding light on the capacity of Jewish groups to repurpose activities, pivot from serving specific communities to addressing broader societal needs, and mobilize resources under extreme conditions. This resilience, the authors argue, is shaped by a complex interplay of factors: pre-existing organizational structures, transnational networks, and the fusion of symbolic and material institutional elements rooted in the Ukrainian-Jewish experience. By situating these efforts within a wider context, the book uses different streams of organization studies to provide an in-depth analysis of resilient civil society organizing during wartime. Aimed at organization scholars, civil society researchers, activists, and those interested in Jewish culture and Ukrainian history, this book offers critical insights into the possibility of civil society resilience in the face of war.