The continuous involvement of companies in non-sustainable practices and lack of responsibility
toward the environment and society have brought economic crises and untold hardship on almost
all the stakeholders. This could also be worsened by the absence of well diversified board of
directors. The main objective of this study was to ascertain the effect of board diversity on the
sustainability disclosure of industrial goods companies listed on the floor of the Nigeria Exchange
Group from 2019-2023. The research design adopted for this study was ex post facto, secondary
data were used and the population of the study was 13 listed industrial goods firms in Nigeria
while the sample of 11 companies were purposively selected. The data were analyzed using panel
least square regression analysis and the statistical package employed was E-views version 10. The
findings of the study revealed that board nationality diversity, board age diversity and board
experience diversity have significant effect on sustainability disclosure of listed industrial goods
companies in Nigeria. Thus, based on these findings, it was concluded that board diversity has
significant effect on sustainability disclosure of industrial goods companies in Nigeria. It was
therefore recommended that the board composition should be expanded to include at least 10% of
foreign members as foreign directors can impact firms’ disclosure practices through their
monitoring and advisory roles. It was also recommended that the board should consist of well
experienced board members as experienced members are equipped with deeper understanding of
the risks and opportunities in a specific industry.