The present contribution discusses the most relevant amendments to the OECD Guidelines for Multinational Enterprises in respect of climate change, as included in the 2023 OECD Guidelines for Multinational Enterprises on Responsible Business Conduct. Starting from the fact that, even though the 2011 edition of the OECD Guidelines did not specifically address climate change, NCPs have however often confronted with climate issues related to this phenomenon, the analysis is undertaken considering the climate change-related NCP complaints brought to date and the NCPs’ determinations. The ultimate goal is to verify whether and, if so, to what extent the practice of the NCPs has influenced and is reflected in the relevant 2023 OECD Guidelines. To do so, after analysing the recommendations about climate change included in the recently updated version of the OECD Guidelines, the present contribution will undertake a thorough analysis of the relevant complaints, paying particular attention to those which best reflect the trend to use the 2011 OECD Guidelines also with regard to climate change-related issues.