This study examines the scholarly work and discussion on greenwashing in sustainability reporting (GiSR) in both G7 and non-G7 nations, using bibliometric and content analysis techniques. The analysis is based on 87 articles from the Web of Science database, covering the period from 2003 to 2022. The study identifies three dominant themes: (1) Greenwashing (exaggeration of green efforts), (2) ESG disclosures and performance gap, and (3) Communicative legitimation strategies and reporting of negative aspects. The findings highlight overlaps and differences between G7 and non-G7 countries, emphasizing the need for further research in non-G7 countries to understand institutional, cultural, and socioeconomic variations. The study also suggests that G7 countries have a higher average citation rate and international collaboration rate compared to non-G7 countries, indicating a more established research ecosystem. The research contributes to the existing literature by mapping the trajectory of knowledge development on GiSR and identifying gaps that can guide future research. Practical implications include helping company managers avoid greenwashing, informing external stakeholders about the factors influencing greenwashing, and aiding regulators in developing effective policies to combat greenwashing. The study calls for enhanced collaboration between G7 and non-G7 nations to address global challenges and promote responsible corporate reporting practices.This study examines the scholarly work and discussion on greenwashing in sustainability reporting (GiSR) in both G7 and non-G7 nations, using bibliometric and content analysis techniques. The analysis is based on 87 articles from the Web of Science database, covering the period from 2003 to 2022. The study identifies three dominant themes: (1) Greenwashing (exaggeration of green efforts), (2) ESG disclosures and performance gap, and (3) Communicative legitimation strategies and reporting of negative aspects. The findings highlight overlaps and differences between G7 and non-G7 countries, emphasizing the need for further research in non-G7 countries to understand institutional, cultural, and socioeconomic variations. The study also suggests that G7 countries have a higher average citation rate and international collaboration rate compared to non-G7 countries, indicating a more established research ecosystem. The research contributes to the existing literature by mapping the trajectory of knowledge development on GiSR and identifying gaps that can guide future research. Practical implications include helping company managers avoid greenwashing, informing external stakeholders about the factors influencing greenwashing, and aiding regulators in developing effective policies to combat greenwashing. The study calls for enhanced collaboration between G7 and non-G7 nations to address global challenges and promote responsible corporate reporting practices.