Background: Frequency, ability to cope, and severity of pain; the genetic structure of the individual affects their emotional and cultural characteristics, beliefs, and personal characteristics. It is stated that pain beliefs are one of the factors affecting emotional pain control and approach to pain. Aims: This study, it is aimed to determine the pain beliefs of individuals experiencing postoperative pain. Methods: Cross-sectional descriptive study. Surgical services of a single secondary care hospital. 170 patients who were in the first week after surgery, experienced acute pain, were between the ages of 18–65, and did not have a psychiatric disorder were evaluated. Collection Tools: Postoperative pain levels of the patients were evaluated with a Visual Analog Scale. As the VAS score increases, the pain level increases. Pain beliefs were evaluated with the Pain Beliefs Scale. Pain Beliefs Scale increases in the score obtained from the sub-score of the scale indicate that the pain beliefs related to that test are high. A student T-Test was used for bivariate comparisons between groups. One-way ANOVA was used to compare trivariate groups. In addition, Spearman's Correlation analysis was performed. Statistically, a confidence interval of >95% was used. The statistical significance level was set as p < 0.05. Results: It was found that the pain levels of the patients participating in the study were low and the scores they received from the Pain Beliefs Scale subscales were moderate. It was determined that those with lower education levels had higher scale scores in the psychological beliefs sub-dimension of the Pain Beliefs Scale. In the organic beliefs sub-dimension, it was determined that those with lower income levels had higher organic beliefs. It was determined that the postoperative pain experienced did not affect pain beliefs (p > 0.05). Conclusion: It was concluded that there was no relationship between the pain level and pain beliefs of patients with low pain in the postoperative period. Individuals experiencing postoperative pain believe that pain occurs due to the influence of both organic and psychological factors. For this reason, it is recommended factors that nurses who care for individuals experiencing postoperative pain provide care for both organic and psychological sources of pain.