This article evaluates the impact of natural resource conflicts on Africa’s security. This study is qualitative and based on secondary data that were analysed textually. Hinged on the greed and grievance theory, the study argues that the mismanagement of resources, greed and grievance have had immeasurable negative implications on national security, national growth and development. The issues that have come to the fore in resource management in some selected African countries include rancorous intergroup relations, militancy, the proliferation of small arms and light weapons, leadership ineptitude, corruption, warlordism and money laundering. The article recommends that effective resource management strategies in Africa are key in curbing the plaguing security challenges and conflicts ensuing from resource ownership in the continent.