Crimean-Congo hemorrhagic fever infection is one of the most common tickborne viral infections, non-infectious in animals and fatal to humans with a mortality rate around 40%. The high mortality rate and lack of vaccines or drug treatment point to the potential danger of infection. The aim of this thesis was to detect 21 complete S-segment Crimean-Congo hemorrhagic fever virus strains originating in Turkey using Fluorimetric Loop Mediated Isothermal Amplification (LAMP) method, which is one of the PCRbased isothermal amplification methods for detecting viral infections. Conserved regions of the 21 strains of the CCHFV observed in Turkey were determined by sequence alignment and LAMP primers for these conserved regions were designed. DNA of CCHFV Ank-2 (GeneBank accession number: MK309333) strain was used and optimum LAMP reaction conditions were determined by changing the temperature, primer amount and MgSO4 concentration. LAMP results were compared with qPCR, which is considered the gold standard. The detection limit for LAMP and qPCR was 2x106 copies/µl. In the study, the CCHFV LAMP primer set-1 gave similar results to the qPCR primer set. The CCHFV LAMP primer set-4 performed better by turning positive 9 minutes earlier than the qPCR primer set. This results indicate LAMP is an alternative method for detecting CCHFV but reveals the necessity of improving the sensitivity of the test.