Cystic echinococcosis is one of the most important zoonotic diseases in Turkey. The aim of this study was for the molecular analysis of Echinococcus granulosus isolates from different regions of Turkey. For this purpose, 46 hydatid cyst samples collected from humans during the surgery were included. The partial sequences of mitochondrial cytochrome c oxidase subunit 1 (CO1) gene was used for identification and molecular analysis of E. granulosus strains. Molecular analysis showed that all of the human cysts belonged to the G1 genotype (common sheep strain) of E. granulosus. According to the results of our study, the sheep strain (G1) is the predominant genotype of E. granulosus in humans in our country.