Self compacting concrete (SCC) has become of vital importance for the construction industry since its invention in Japan in 1988. The main advantage of SCC is the ease of placement and the consolidation; however, the need to use additional powder materials and high superplasticizer dosage makes it more expensive than the conventional concrete. Many supplementary cementitious materials (SCMs) such as fly ash (FA), silica fume (SF) and fine materials such as lime stone powder (LSP) and lime stone dust (LSD) are used worldwide to produce SCC.This research was intended to study the effect of incorporating natural pozzolan (NP); as an SCM; on the properties of SCC. It is expected that the book shall suffice the reader's needs about the incorporation of Saudi natural pozzolan in SCC.