This article uses firm-level data to analyse the drivers of Foreign Direct Investment (FDI) to the manufacturing and services sectors of 30 Sub-Saharan African countries. It shows that improving the investment climate helps to attract aggregate FDI. By analysing disaggregate FDI data, the article establishes that there is considerable contrast in behaviour between vertical FDI (foreign firms producing for export) and horizontal FDI (foreign firms producing for local markets). In particular, the latter firms are attracted to areas with higher trade regulations, highlighting their interest in protected markets. Furthermore, horizontal FDI is more affected by financing and human capital constraints and less affected by infrastructure and institutional constraints than vertical FDI is.