Purpose: The aim of this study is to analyze and compare the implementation stages of ESG practices from the “B3 Guide to ESG Sustainability in Companies” with the implementation of Circular Economy recommendations that are included in the ISO 59000 series and in the “Circular Economy in Practice” guide from the Brazilian National Confederation of Industry.Theoretical framework: Climate Change has generated global challenges that demand actions/practices, such as ESG and CE, to mitigate impacts and promote sustainability, balancing environmental preservation and economic development, especially in Brazil due to its challenges in terms of preservation and development. Methodology/Approach: This article carried out a documentary analysis of sources on ESG and EC practices and recommendations, selected them and composed a comparative table. Findings: The results of this analysis and comparison revealed high convergence between the steps and recommendations of these practices, which highlights the strong complementarity in the implementation of ESG and EC practices, suggesting other issues to be investigated by futures research.Research, practical & social implications: Given the relevant and growing concern with sustainability and the search for more responsible and resilient business models, studies like this can help guide a more sustainable future and even create value for companies and society.Originality/Value: In addition to being unprecedented, this analysis/comparison and the theoretical bases raised original questions, including for future research related to the theme.Keywords: Sustainability; ESG B3 Implementation; Circular Economy NCI Guidelines; ISO 59000; Comparative Analysis.