The aim of this study is to test the influence of the board's gender diversity on firm value through sustainability report disclosure. The research also examines the effect of industry profile in moderating the board's gender diversity relationship with sustainability report disclosure and the moderation of sustainable investment practices in the relationship between sustainability report disclosure and firm value. The testing uses panel data regression to analyze 306 sample data from non-financial companies listed on the Indonesia Stock Exchange that comply with the sample selection criteria. The research findings prove that board gender diversity is able to increase firm value because investors view the presence of female board members as reflecting a good corporate governance mechanism. This research also proves that the presence of women board members reduces the level of sustainability report disclosure. The effect of board gender diversity on sustainability report disclosure is reduced in high-profile companies. High-profile companies experience strong pressure to make disclosures of activities in which environmental and social impacts are transparent. Conversely, this study cannot demonstrate a mediating role of sustainability report disclosure on the effect of board gender diversity on increasing firm value. The interaction effect of sustainable investment practices is also not significant in this study. The research findings provide an understanding of board gender diversity, sustainability report disclosure, and firm value within the multi-theoretical framework of agency theory, stakeholder theory, and social role theory.