The aim of this study was to determine the compassion levels and the factors that affect the mercy levels of the operating room nurses, which is an important part of the surgical process.Methods:This descriptive study was conducted with 236 nurses working in the operating rooms of public and private hospitals between December 2017 and January 2018, which allowed the study to be carried out in Istanbul.The Compassion Scale and the Introductory Information Form were used to collect data.The SPSS 23 for Windows computer program was used to analyze the frequency,Mann-Whitney U Test, Kruskal-Wallis H Test, .Result:47.1% of the operating room nurses were male and 52.9% were female.The mean total score of the operating room nurses’ Compassion Scale was 3.92 ± 0.85.According to gender, kindness, common humanity, mindfulness, disengagement and total compassion level in men; ındifference and separation were higher in women (p <0.05).According to marital status, the size of indifference was higher in married, all other dimensions were higher in single staff. Conclusıon:In the light of the findings obtained from the study, it can be said that the highest average score can be taken from the scale, and the compassion levels of the operating room nurses are high.