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Community-supported agriculture (CSA) has the potential to reduce food loss and waste (FLW) due to a direct connection between consumers and producers, lower standards regarding product aesthetics and consumer-related values. Accordingly, CSA could compensate for possible yield gaps compared to conventional agriculture. Here, FLW and yields were assessed for one year in four CSA initiatives in the area of Leipzig, Germany, and compared to reference data. The results show that FLW during production, distribution and consumption were on average 22–70% lower compared to reference data. On average, due to lower FLW, the CSA initiatives could compensate for yield gaps of 32%, which reflects yield gaps typically observed between organic and conventional agriculture. Actual yield gaps in CSA might be lower, as agroecological approaches to increase productivity are widely adopted. The co-evaluation of the results with CSA gardeners showed that FLW could be further reduced in all stages. Reducing FLW was mentioned as an important sustainability goal of the investigated CSA initiatives, yet they also indicated a focus on biodiversity, education, food quality or the reduction of fossil fuels. This pilot study indicates that CSA can contribute to the transition towards sustainable and resilient food systems.