Academic Editor: Gaetano della Corte Received: 1 January 2025 Revised: 29 January 2025 Accepted: 31 January 2025 Published: 2 February 2025 Citation: Xu, B.; Jamal, N.M.; Liu, Y.; Yahya, T.B. Board Diversity and Environmental Disclosure: A Review, Current Insights, and Emerging Trends. Sustainability 2025, 17, 1211. https://doi.org/10.3390/su17031211 Copyright: © 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/ licenses/by/4.0/). Review Board Diversity and Environmental Disclosure: A Review, Current Insights, and Emerging Trends Bikun Xu * , Noriza Mohd Jamal, Yue Liu and Taher Ben Yahya Faculty of Management, Universiti Teknologi Malaysia (UTM), Skudai Johor 81310, Malaysia * Correspondence: beckyxu0117@gmail.com Abstract: As the challenges of environmentally friendly development continue to inten- sify, the governance mechanisms of environmental disclosure have become particularly important. Although studies have explored the governance determinants of environmental disclosure, there is a lack of a comprehensive overview in the existing literature that ad- dresses board diversity. To fill this gap, this study provides an in-depth analysis of board diversity that promotes environmental disclosure by systematically reviewing 74 relevant papers from the Scopus database. In addition to utilizing qualitative content analysis based on a systematic literature review, this study distinguishes and identifies board diversity factors influencing environmental disclosure through quantitative bibliometric analysis using a descriptive analysis. The results not only summarize the key findings of the existing literature but also suggest directions for future research, providing new perspectives that could aid in understanding and improving board diversity in environmental disclosure. Furthermore, this study identifies a number of challenges in practice, such as the difficulties that may be encountered in collecting and validating accurate environmental data. The study highlights the importance of board diversity for better environmental disclosure and suggests future research directions. Policymakers and management are urged to promote board diversity to improve environmental disclosure, which can enhance a company’s performance and societal value. Keywords: board diversity; environmental disclosure; environmental sustainability; sys- tematic literature review; content analysis 1. Introduction In recent years, institutions, governments, and business stakeholders have shown heightened awareness regarding environmental preservation and corporate sustainabil- ity. In response to this growing pressure, many organizations have begun to integrate environmental reporting into their corporate sustainability strategies. The United Nations Sustainable Stock Exchanges Initiative (SSEI) indicates that each of the major corporations must publish their environmental performance by 2030. Environmental disclosure (ED) serves as an effective mechanism for governments to promote collective environmental accountability. It communicates non-financial infor- mation mostly via narrative descriptions [1]. The clarity of such narratives influences the practicality of environmental communication and determines message content. Conse- quently, an increasing number of stakeholders anticipate that businesses will operate with greater transparency, ethics, and responsibility, leading to a considerable rise in corpo- rate environmental disclosure. These evolving expectations have prompted companies to actively build their brands by improving their environmental disclosure. Sustainability 2025, 17, 1211 https://doi.org/10.3390/su17031211