The article is devoted to an important and topical issue of legal description of the role and activities of the public in the implementation of anti-corruption reforms. Countering corruption has always been an important task for Ukraine. It has been proven that the public is the most interested stakeholder in the fight against corruption. It is the members of civil society who want to live in a state governed by the rule of law, where the principles of equality, publicity and transparency are truly in place. And the success of anti-corruption changes depends on the willingness and participation of every member of civil society. It is noted that civil society involves active participation of citizens in political processes, civil dialogue and various public initiatives. Its main goal is to protect the rights and interests of citizens, as well as to oversee the activities of government agencies and prevent possible abuses. The legal and numerous doctrinal definitions of the concept of “public” and its components in the context of anti-corruption reforms are analysed. It is substantiated that the experience of involving the public in the implementation of anti-corruption reforms can be successful only if representatives of public authorities and business are open and transparent. It is emphasised that citizens and civil society organisations play an important role in combating corruption, as they serve as advocates for the public interest, provide independent oversight, mobilise communities, protect whistleblowers, advocate for policy reforms and promote transparency, accountability and good governance. In particular, citizens are empowered to demand responsibility, act as whistleblowers, influence policy and elections, raise public awareness and promote ethical values. Their participation is essential for the development of transparent, accountable and corruption-free societies. Civil society organisations are also important actors in the anti-corruption fight in Ukraine. Their independent oversight, advocacy, support for whistleblowers, policy analysis and engagement with citizens contribute significantly to the promotion of transparency, accountability and good governance in the country.