Whistle-blowing activities around the world have generated huge interests from concerned parties such as the financial and public service, as the aftermath of its neglect often has dilapidating effects on the sustainability of economic growth and development of the nation. This is often seen in the 3rd world nations, such as Nigeria. This study aimed to examine the existing phenomenon between whistle-blowing, economic sustainability, growth and development of Nigeria. This study adopted the Theory of Planned Behavior. However, this was a literature review study that basically draws inferences from studies in this field from different continents (i.e. Europe, America, Asia and Africa). Consequently, the objective of this study was to conceptually investigate the whistle-blowing activities in Nigeria as to how it has assisted in curbing corruption in the public space in turn and improving the economic growth and development. In furtherance, this study reviewed events in African countries with close indexation with Nigeria. Therefore, this study concludes that whistle-blowing has a direct impact on sustainable economic growth and development of Nigeria. This is evident in the Transparency International index report. Lastly, this study recommends that whistleblowing policy should be properly implemented in public institutions to achieve minimum involvement of corruption in the country and that whistleblowers should be protected to encourage disclosure of corrupt acts in the public sector. This in turn will assist in the attainment of sustainable economic growth and development. Keyword: Whistleblowing, sustainable economic growth, theory of planned behaviour