Supply chain management is grounded on the assumption that endless economic growth is compatible with environmental and social sustainability. Yet scholars from ecological economics question this assumption due to ever increasing evidence showing how hard it is to decouple growth from negative environmental and social externalities. In response, pressure from social movements is mounting, and the agendas of several countries already consider alternatives to growth. Therefore, this article presents a critical thought experiment for the supply chain management discipline: What are the implications of moving from the current endless growth paradigm to a post‐growth paradigm for businesses and their supply chains? Using the umbrella term “post‐growth,” this article identifies three key post‐growth principles—(i) socio‐ecological wellbeing, (ii) selective downscaling, and (iii) systems thinking—and then examines their implications for supply chain management research and practice.