Language is an essential part of cultural identity, communication, social integration, and national growth. In postcolonial Africa, colonial languages, particularly English, French, and Portuguese, have been imposed and perpetuated in education and government sectors, resulting in a neocolonialist framework. This chapter looks at the function of language as an instrument of neocolonialism in Africa, with a particular focus on the continued use of colonial languages in education and administration. Using Postcolonial Theory and critical discourse analysis, the chapter investigates how the imposition and maintenance of colonial languages like English, French, and Portuguese have maintained power imbalances and strengthened Western hegemony in African societies. Through an examination of historical contexts and contemporary case studies, the chapter also examines how the use of colonial languages in education and government institutions marginalizes indigenous languages and cultures, restricts access to knowledge and resources, and impedes the development of local communities. The chapter further explores how language policies, globalization, and social movements affect efforts to deneocolonize language practices in Africa. This chapter therefore has the potential to raise awareness about the intricacies of language as a neocolonial control mechanism, as well as to provide solutions for achieving linguistic deneocolonization, cultural autonomy, social justice, and the incorporation of indigenous languages into African institutions.