Nigeria faces a dual crisis of high maternal mortality and widespread internal displacement driven by conflict. This narrative literature review synthesizes evidence on community-based maternal health care models designed to serve internally displaced persons (IDPs) and conflict-affected populations in Nigeria. Drawing from existing studies spanning 2013-2025, this review examines intervention types, effectiveness, implementation challenges, and policy implications. The evidence reveals diverse community-based approaches including mobile health clinics, community health workers, emergency transport schemes, volunteer obstetrician programs, and faith-based initiatives. These interventions have demonstrated significant improvements in maternal health outcomes, with documented reductions in maternal mortality ratios ranging from 16.8% to 37%, substantial increases in antenatal care coverage, and improved facility delivery rates. However, persistent barriers including insecurity, inadequate funding, cultural norms, and weak health infrastructure continue to challenge sustainable implementation.