TY - JOUR A1 - Gegenhuber, Thomas A1 - Mair, Johanna T1 - Open social innovation: taking stock and moving forward T2 - Industry and Innovation N2 - Open forms of organising innovation bear great potential to address societal challenges, such as the climate crisis. Existing approaches to open social innovation (OSI) draw on a corporate and organisation- centric open innovation model as a blueprint for addressing social and ecological problems. However, such problems are ‘wicked’ and ‘com-plex’ in nature and thus require concerted efforts from a diverse set of stakeholders, including businesses, government agencies, non-profits and communities. Based on a review of the open-, user- and social- innovation literature, this essay traces the evolution from an organisa-tion-centric view (OSI 1.0) to a multi-stakeholder, cross- sectoral perspective (OSI 2.0). More specifically, we understand OSI as a concerted effort undertaken by multiple stakeholders from various sectors throughout the social innovation process, from diagnosing societal challenges, to developing ideas for how to solve problems, creating solutions, effectively scaling solutions and generating impact. We sharpen the terminology for OSI 2.0 and specify design dimensions for the effective orchestration of collaboration and coordination, and outline key areas for future research. Our objective is to foster dialogue between open- and user-innovation and social-innovation research. Y1 - 2024 UR - https://opus4.kobv.de/opus4-hsog/frontdoor/index/index/docId/5314 VL - 31 IS - 1 SP - 130 EP - 157 ER -