The circular economy (CE) presupposes adherence to business models that contribute to the circularity of materials along production chains. The intention is to retain value by retaining resources in supply chains, in the same cycle or in different cycles. The shorter the cycle for reintroducing material into the same supply chain or another, the greater the retained value. Following this prerogative, the 10Rs illustrate the potential for retaining the value of resources, through the practices of refusal, reduction, reuse/resale, repair, renovation, remanufacturing, reuse with new function/purpose, recycling, energy recovery and re-extraction of resources. For these practices to become viable and possible in organizations, the engagement of different actors is required, the integration of innovation and the assumptions of circularity in the strategy and operations of organizations. This requires an organizational culture aligned with the precepts of the circular economy. In addition to demanding new non-financial metrics to measure circularity levels, the need for management based on ethical, social and environmental values. Thus, the proposed theme is subdivided into different topics for CE, detailed below: Background and barriers. Practices. Transition from linear to circular model. Business models. Circular commercial alternatives. Social dimension. Reformulation of products and supply chains. Modularization and use in cascade. Reuse of products, components and materials. EC and communication with the market. Sustainable cities and EC. Performance and evaluation indicators. Industrial ecosystems. Institutional changes and Public Policies towards CE. Eco-design. Reduction. Reuse. Recycling. Reclassification. Renovation (renewable energies). Manufacturing cost. Skills. Leadership. Innovation. Modeling, simulation, decision models and operational research techniques for CE. Technological and sustainability transitions. Integration of EC with Industry 4.0, Digital Transformation and emerging technologies.