INTRODUCTION Treatment team charged to help patients and their family making decision about donate organs in the final stage of life. Hence, their knowledge and attitude is important to plan of increasing the rate of organ donation. MATERIALS AND METHODS About 150 nurses recruited in this cross-sectional study randomly. After taking informed consent, questionnaires were filled. The data collection tool was a multipart questionnaire including demographic information, 18 questions about attitude and practice and 15 question about knowledge toward organ donation. Data were analyzed by SPSS software using K-squire, Pearson correlation test, T-test, variance analyze on 95% confidence interval. RESULTS Most of participants (76%) were 25-44 years old. About 81.3% of them were female (n=122). The attitude average score between males and females was 85.25±35.61 and 70.37±46.53, respectively. The practice average score in females was 34.43±47.71 and between males was 29.63±46.53. The knowledge average scores were 50.60±16.19 and 56.54±17.48 for two groups (p>0.05). The knowledge average scores between different age groups was significant (p<0.05). There was a direct and significant relation between attitude and practice (r=+0.33, p<0.05), attitude and Factors influencing attitude and practice (r=0.866, p<0.05), but the relation between attitude and knowledge was indirect and significant (r=-0.183, p<0.05). CONCLUSIONS Since the medical team are most important adviser for promote activities related to organ donation, it seems that educational curriculum and facilities should applied to enhance attitude and behavior favorable change of personnel towards this issue.