This work characterizes the influence of reputation and the social capital of associates/managers on the operation of a network of small supermarkets in Minas Gerais. In summary, it can be said that a good reputation improves the relationship between associates and that no one wants to have any kind of relationship, personal or professional, with associates/managers or companies that have a bad reputation. To maintain a good reputation, a member needs to honor his financial commitments; be committed to the network; follow the rules/statutes; participate in general meetings, assemblies, and voting; buy from partner suppliers; be cooperative; and always be willing to help other members. Social capital is shown to be relevant through the appreciation of the relationships among the associates; the mutual respect and recognition among the parties; the exchange of information and experiences; the sharing of resources; the loan of materials/products; the cooperation; and the appreciation/recognition of the collective action. The members' good reputation allied to the social capital built among them were considered relevant for the maintenance of the network's joint operation.