<p>Achieving the global vision of “living in harmony with nature by 2050” requires effective environmental leadership to address complex, multifaceted challenges such as human-wildlife coexistence. Grand strategy, despite its proven potential to prepare future leaders for complex problem-solving, has yet to be incorporated into environmental leadership education. This paper introduces a graduate-level course designed to teach grand strategy to future environmental leaders. The course centered on coexistence as a goal, grand strategy as a tool, and problem-oriented integration as a method, combining lectures, case studies, and a field trip to the Greater Yellowstone Ecosystem in the United States. Achieving sustainable coexistence requires moving beyond tactical responses to immediate human-wildlife encounters and strategic interventions focused solely on managing recurring human-wildlife conflicts. It demands higher-order integrative strategies that adaptively manage complex human-wildlife and human–human interactions across ecological, sociopolitical, and cultural dimensions. Students learned to approach grand strategy through three lenses: as a theory of change, as a process of practice, and as a habit of mind. By linking conceptual frameworks to real-world applications, the course fostered critical thinking, leadership skills, and interdisciplinary integration. This paper reflects on our teaching experiences, student outcomes, and pedagogical tools, such as fieldwork, case studies, pattern recognition, and reflexivity, that proved effective in helping students internalize and apply grand strategy. It concludes with recommendations for incorporating grand strategy into environmental leadership education to better prepare emerging leaders for current and future environmental challenges.</p>