Mountain regions around the world have a unique potential for sustainable development. Unleashing this potential requires cooperation and sharing of information and practical experiences across regions. Yet, innovative development approaches frequently remain isolated, considerations regarding potentially successful scaling are left unshared, and regional and interregional action learning is ever so often neglected. The project “Promoting Innovations for Sustainable Development in Mountain Areas” (PRIMA) fostered pilot activities across mountain regions to address these gaps and spark out-of-the-box thinking, identify, and showcase innovative approaches. In the presentation, we will draw on the learnings of PRIMA and present a concept for an innovation hub that will enable and facilitate inter-regional action learning, capacity development, partnerships, and co-creation with the aim of nurturing evidence-informed novel approaches for inclusive and sustainable development in mountains.