Ohorongo Cement is a cement factory on farm Sargberg near Otavi in the Otjozondjupa Region of Namibia. It is one of two Namibian cement factories and has a production capacity of per annum.
The ground breaking ceremony for the construction of the plant was held in January 2009. A roof wetting celebration took place in February 2010, when the preheater tower reached its final height of 109 meters. Production started in December 2010.
Initially wholly owned by the , Ohorongo states that ownership is to be transferred to Namibian institutions over time. In 2019, Schwenk still owned 69.83%, with the Development Bank of Namibia the largest minority shareholder. After the 2018 production start of Cheetah Cement, a second, larger, cement factory nearby, Schwenk offered its shareholding for sale. A 2019 acquisition offer by investment company West China Cement, however, was turned down by the Namibian Competition Commission because West China already owns Cheetah Cement.