The United Cement Company of Nigeria Ltd (UniCem), one of Nigeria's largest cement manufacturers and suppliers of high-quality cement, is a subsidiary of Lafarge Africa Plc. It is located in Cross River State, Nigeria with core markets in the South-South and South-East regions of the country.

Established in 2002 after acquiring the assets of moribund Calabar Cement Company (CalCemCo), a Greenfield cement manufacturing plant was constructed at Mfamosing, 40km north-east of Calabar, Cross River State. UniCem is headquartered in Calabar with its cement manufacturing operations consolidated at the Mfamosing planta modern production facility with an annual production capacity of 2.5 million tonnes which was commissioned in 2009.

To meet the increasing demand for its products, an additional manufacturing line with a production capacity of 2.5 million metric tonnes is currently being constructed. The project, upon its completion in 2016, will double the company's production capacity to 5 million metric tonnes per annum thereby consolidating its position as the leading cement company in Nigeria's South-South and South-East regions.