Civil Society Organizations played an instrumental role in the restoration of democracy in Nigeria and Ghana and in recognition of their important role in democratic transition in both countries they were considered by both scholars and international organizations as a veritable tool for democratic consolidation. The argument that CSOs aid democratic consolidation in both countries and account for the dissimilarities in democratic consolidation necessitated this study. Therefore, the study examined the nexus between civil society organizations and democratic consolidation in Nigeria and Ghana and noted like in other studies that CSOs in both countries suffer from lack of unity, communication gap, inadequate personnel, among others. Hence, this study deduced that civil society organizations in both states perform similar functions and share the same problems. In this context, the study argues that it is not CSOs that account for the differences in democratic consolidation as regards free and fair election and the alternation of power between the two major political parties in Ghana. The study posited that the differences in the nature and character of both states are the underlying factor that account for the marked differences in democratic consolidation in both states. The study made use of ex-post facto research design, qualitative method of data collection, qualitative/descriptive method of data analysis and adopted the theory of post-colonial states. The study noted that CSOs do contribute to democratic consolidation in both states but are facing problems associated with post-colonial states and that the nature and character of both states influence the roles of CSOs in the process of democratic consolidation and this is what account for the differences in democratic consolidation in both countries. It recommended among others, the strengthening of CSOs by government of both states, adequate funding by donor agencies and adoption of effective method by CSOs stakeholders to engage the state.