Traditional food markets in sub-Saharan Africa (SSA) are pivotal urban spaces, especially for vulnerable populations. These markets are vibrant hubs for commerce, cultural exchange, and social interaction, yet they face challenges such as food safety issues, inadequate infrastructure, and regulation that is a complex mix of informal mechanisms in need of a balanced degree of formalization. Rapid urbanization in SSA and the vulnerabilities of informal settlements underline their enduring importance. The COVID-19 pandemic further highlighted their crucial role in promoting food access, supporting local economies, and preserving social connections during crises. However, a comprehensive understanding of their multifaceted impact on urban life remains limited. This study provides a systematic narrative literature review with the aims of mapping the existing literature and evaluating their complex impact on vulnerable communities. The review employed a systematic search strategy, encompassing research studies and gray literature. It highlights the geographic distribution of studies across SSA, with a concentration in East and Southern Africa.