This study examines the effects of Environmental, Social and Governance (ESG) disclosure on the market value of industrial goods companies listed on the Nigerian Stock Exchange Group. Leveraging theoretical perspectives, including signaling theory, voluntary disclosure theory, and agency theory, the study employs a qualitative research design and secondary data sources to understand the relationship between ESG disclosure and market value. The findings indicate that ESG disclosure can positively impact market value by reducing information asymmetry, improving transparency, and enhancing a company’s reputation. However, the adoption of ESG disclosure practices in Nigeria faces challenges such as limited awareness and understanding of ESG disclosure, inadequate regulatory frameworks, lack of stakeholder engagement, limited resources and capacity, and cultural and social factors. To address these challenges, the study proposes strategies for enhancing ESG disclosure practices in Nigeria, including developing ESG reporting guidelines, stakeholder engagement, capacity building, regulatory support, and industry initiatives. The study highlights the importance of ESG disclosure in promoting sustainable development and improving market value, emphasizing the need for companies to prioritize ESG disclosure and for regulatory bodies to develop guidelines ensuring consistency and transparency. The findings of the study have implications for policymakers, regulators, and companies in Nigeria, emphasizing the importance of ESG disclosure in promoting sustainable development and improving market value.