Introduction: Short Food Supply Chains (SFSCs) are promoted as a pathway to more sustainable agri-food systems. Jordan’s fresh-produce sector, which relies heavily on local markets, offers a valuable setting to examine how SFSCs support sustainability. This study qualitatively explores how the economic, environmental, and social dimensions of sustainability manifest, and occasionally trade off, within Jordan’s fresh-produce SFSCs. Methods: The study analyzed a qualitative dataset comprising 30 semi-structured interviews with farmers, intermediaries, and retailers, using deductive thematic analysis. Codes were organized around economic, environmental, and social sustainability dimensions. Results: Sustainability benefits are evident across all three pillars. Economically, local sourcing reduces transport costs, buffers actors from global price shocks, and retains value within communities. Environmentally, short distances, minimal packaging, and rapid turnover reduce fuel use, emissions, and waste. Socially, SFSCs create local employment, strengthen producer–consumer relationships, and expand market access for smallholders and women. Discussion: Jordan’s SFSCs deliver measurable sustainability gains despite infrastructural and financial constraints. Targeted improvements, such as community cold storage, clearer payment systems, and consumer “buy local” initiatives, could amplify these benefits. The findings extend SFSC research to a developing-country context and highlight practical steps for policymakers seeking sustainable food networks.