The study focused on marketing ethical value and sustainable leadership practices which gear towards integrating leadership. The specific objectives were to examine the effect of honesty, transparency and accountability on sustainable leadership practices in Nigeria. This study utilized survey research design. Information was gathered from primary source. The population of the study comprised of selected public and private sector employees across two geopolitical zones (North Central and South West) in Nigeria includes Kogi State and Ekiti state, Nigeria. Convenience sampling technique was used to select 350 respondents from the area for easy collection of data, since the selected respondents were not residing at the same place. Simple linear regression statistical tool was used to test the hypothesis through Statistical Package for Social Sciences (SPSS) version 20. The findings show that honesty, transparency, accountability have significant effect on sustainable leadership in Nigeria. The study therefore recommends that both business organisation managers and government stakeholders should display honesty to attract the loyalty of their subordinates and followers, they should imbibe the spirit of transparency in their course of discharging their duties to foster peace and commitment among their subordinates and followers. and Accountability should be the focus of both business organisation manager and stakeholder to enhance trust and positive contribution of subordinate and followers towards achievement of desire objectives.