In July 2017, Dr. Barbara Gray was honored with the Lifetime Achievement Award from the IACM during its 30th annual conference in Berlin, Germany. In this tribute article, we celebrate Barbara's unique and varied contributions to our understanding of conflict and collaboration. We highlight multiple aspects of Barbara's scholarly work including research on (a) intergroup conflict and organizational change, (b) power and conflict dynamics, (c) frames and framing, and (d) shared meanings and institutional theory approaches to conflict and conflict resolution. In reviewing this work, we recognize Barbara's lifelong concern for social justice and environmental sustainability, her pioneering use of qualitative methods, and her ongoing commitment to the development of young scholars.Preparing this tribute to Dr. Barbara Gray offered an opportunity to review her many contributions across multiple areas of knowledge. While the common thread of conflict management runs through all her work, Barbara's scholarly interests scale from individual cognition to transnational institutions, and her knowledge of theory spans across the fields of negotiation, psychology, political science, communication, sociology, and beyond. We quickly realized that we needed to address the full breadth of Barbara's work, as her impact stems in no small part from her unique position as a boundary spanner who builds bridges between the ivory towers of the academy.