The environmental impact of the cement production has been beckoning for attention in recent time. Different literatures have different things to say on this environmental impact, at different production phases. This study applied Life cycle assessment (LCA) evaluation tool to evaluate Ordinary Portland Cement (OPC) in establishing the environmental implication of cement production using the midpoint approach of LCIA method. Result of assessment shows that clinker production phase has the highest contribution to global warming which brings about climatic change due to high CO₂ emission which affects both human health and ecosystem. Crude oil, coal and natural gas are expended maximally to bring about fossil resource scarcity and terrestrial toxicity, which affects both human and ecosystem because of high copper deposited from the clinker production phase alongside other phases of productionThe environmental impact of the cement production has been beckoning for attention in recent time. Different literatures have different things to say on this environmental impact, at different production phases. This study applied Life cycle assessment (LCA) evaluation tool to evaluate Ordinary Portland Cement (OPC) in establishing the environmental implication of cement production using the midpoint approach of LCIA method. Result of assessment shows that clinker production phase has the highest contribution to global warming which brings about climatic change due to high CO₂ emission which affects both human health and ecosystem. Crude oil, coal and natural gas are expended maximally to bring about fossil resource scarcity and terrestrial toxicity, which affects both human and ecosystem because of high copper deposited from the clinker production phase alongside other phases of production.