The significance of Small and Medium Enterprises (SMEs) in a nation's economic growth cannot be overstated, as they significantly contribute to national output, often reflected in Gross Domestic Product (GDP). However, the rise of ICT, particularly through social media, has transformed the way SMEs operate globally. Nigeria, like many other countries, has benefited from the shift towards social media marketing. This study aims to explore the crucial role of social media marketing in the growth and development of SMEs in Nigeria. Using the Innovation Decision Process theory, the study relies on secondary data from sources such as textbooks, journals, and online materials. It contends that social media marketing has enhanced connectivity, knowledge acquisition, and customer engagement for SMEs in Nigeria. The study also highlights that the benefits SMEs gain from social media depend largely on how effectively and efficiently they utilize these platforms. As a result, the study recommends