Abstract: The principal component analysis, one of the methods in factor analyses was used to evaluate thegeochemical composition of Karamadazi and Çelebi granitoids. Based on this method, the factorscontrolling the geochemical characteristics of the Karamadazi Granite are TiO2+MnO+Zr/SiO2 andCaO+Na2O+Sr/Rb+Ba+K2O ratios, and for the Çelebi Granitoids the (Fe0(T)+Ca0+Mg0+Y)/(K20+Rb)and (Na2O+Ba+Al2Oj)/(SiO2) ratios. These two granitoids are clearly distinguished from the sterile/nonproductive Central Anatolian Granitoids (CAG) on Harker diagrams based on these controlling factors,(parameters). CAG plutons such as Yozgat batholith, Terlemez quartzmonzonite, Kerkenez granite,Ekecikdağ quartzmonzonite ve Ağaçören intrusive suite are different from the productive ÇelebiGranitoids in their higher silica content and generally higher total alkali values. This study suggests thatfertile (iron producing) plutons are less differentiated and have very little contribution from continentalcrust compared to the sterile (non-productive) plutons. Higher apatite and zircon abundances in the ÇelebiGranitoid suggest that the Çelebi Granitoid have more I-type characteristics compared to non-productiveplutons of CAG. The Karamadazi Granite is the most striking example for the granitoids in CAG plutonsabove having the least contribution from the continental crust, evidenced by the lowest mean Rb, Ba, Th,the highest mean Sc, V, and mean Zr, Y, Ni contents. Based on the factor analysis, it is proposed that theKaramadazi Granite display geochemical characteristics similar to the Terlemez and Ağaçören granitoidsof CAG.