"Effect of Different Doses of UV-C on Fruit Quality and Storage Period on ,,Regina" Cherry Cultivar" Sweet cherry is a fruit that is harvested during the full maturation and is not suitable for long-term storage. Problems such as early deterioration, fungal diseases, wrinkles encountered in the cherry preserves reduce fruit quality. In this study, UV-C doses were applied to increase the resistance of fruit to fungal diseases and to prolong the shelf life. Fruit samples taken from Regina sweet cherry variety were subjected to UV-C irradiation (0'-2,5'- 5'- 7,5 ') at different times and stored in modified atmosphere packs for 15, 30 and 45 days. At the end of each storage period, fruit flesh color (L*, h°), fruit firmness (kg), stem resistance (kg), total soluble solids (%), pH, total titratable acidity (%g), anthocyanin (mg/l), phenolic compounds (GAE mg/100g) and fungal susceptibility and fruit decay rate (%). It has been tried to demonstrate the effects of UV-C applications on both fruit quality and the ability to combat disease agents. According to the results of the research, UV-C applications achieved almost 100% success in 15 and 30 day storage periods for the control of fungal diseases for each dose except control application. In 7.5-dose doses of UV-C, the fruit composition was adversely affected by some defects in terms of fruit quality criteria. The same was true during the 45 day storage period, with long-term storage failure occurring in collapses and deterioration.