UV beams are known to enable photosynthesis in plants and vitamin D synthesis in human, kill pathogen microorganisms and provide heat for the survival of life. On the other hand, solar dermatitis, sun burn, pigmentation, cataract and skin cancer formation, acne, echymosis, keratosis, photodermatosis, light sensitivity, mutation, actinic elastosis and sensitivity to infections due to immune deficiency may be seen due to over exposure to UV beams [1,2,6,7] In this study, the effect of ultraviolet-C (UVC) radiation on hematologic parameters of mole rats (Spalax leucodon) was studied. Ten mole rats of both sexes, weighing 150 -200 g, were used. The rats were exposed to 8 hours daily UVC radiation for 45 days. Before the radiation exposure (as a control) and on day 7, 14, 30 and 45, blood specimens were obtained from the experimental groups. Then blood samples were analyzed and compared to the control groups. A significant decrease or increase of hematological parameters was observed in some experimental groups in terms of the control groups of values (p < 0.05). Alterations in other hematological parameters were not found to be statistically significant (p > 0.05). These results showed that the UVC radiation has significant effects on some hematological parameters of mole rats according to the radiation exposure time and a dose.