This is processed Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) data from the Integrated Ecosystem Programme cruise in the Southern Benguela (IEP-SB). The cruise took place from 18 to 25 February 2017 aboard the RV Algoa. A total of 43 stations were occupied along four transect lines on the west coast of South Africa. Ten Conductivity, Temperature, Depth (CTD) stations were occupied along the Kleinsee Monitoring Line (KML) of Kleinsee, ten along the Namaqua Monitoring Line (NML) of Namaqua, twelve stations along the St Helena Bay Monitoring Line (SHBML), two separate stations in the low oxygen zone in St Helena Bay, and nine stations along the Scarborough Monitoring Line (SCL) of Cape Columbine. Discrete water samples were collected in 500ml Certified Reference Materials (CRM) bottles from Niskin bottles and spiked with 0,02% of Mercuric chloride before being stored in the dark at room temperature for later analysis in the laboratory ashore using a Versatile INstrument...