This article argues that good governance is crucial for achieving social justice in Nigeria, where persistent inequality, inadequate service delivery, and weak institutions hinder progress. It explores how principles such as accountability, transparency, the rule of law, and participatory governance can ensure fair access to resources and empower marginalised groups, including women, youth, and persons with disabilities. By drawing on concepts such as the Social Contract and Participatory Governance, the article links effective governance to enhanced trust, legitimacy, and citizen inclusion. It highlights the negative impact of corruption, ethno-religious tensions, and institutional fragility on justice delivery while emphasising the importance of legal reforms, anti-corruption efforts, and inclusive policies. The article also emphasises the importance of governance in enhancing education, healthcare, and infrastructure, advocating for the use of technology to improve efficiency and accessibility. In conclusion, it calls for practical reforms, civic participation, and stronger institutions to build a fairer and more equitable Nigerian society, positioning good governance not just as an administrative goal but as a pathway to social justice.