Introduction: Diabetic patients play an important role in their treatment and reduction of symptoms, with self-care being the most important factor for controlling disease progression. Self-efficacy in promoting self-care behaviors in these patients is a major factor. The present study aims to determine the correlation between self-care and self-efficacy among patients with type 2 diabetes. Materials and Methods: This descriptive-analytical study was conducted on 95 patients,  aged 30-65 years with type 2 diabetes. Data were collected through interviews using a three part questionnaire covering demographic data, self-efficacy and self-care in patients with type 2 diabetes, and were analyzed using SPSS software version 20, and descriptive and analytical statistics (Pearson correlation square, independent t-test, one way variance and multivariate regression model). Results: Mean score of self-efficacy was 71.5±14.1 and for self-care the mean score was 53.6±11.7. In this study, Spearman correlation square showed a significant positive correlation between self-care and self-efficacy (P<0.001). Also, significant positive correlations were found between self-efficacy and all the aspects self-care. Conclusions: This study showed a significant positive correlation between self-care and self-efficacy, demonstrating that self-efficacy is a significant requisite for self-care behavior must be emphasized in diabetes-related educational programs.Introduction: Diabetic patients play an important role in their treatment and reduction of symptoms, with self-care being the most important factor for controlling disease progression. Self-efficacy in promoting self-care behaviors in these patients is a major factor. The present study aims to determine the correlation between self-care and self-efficacy among patients with type 2 diabetes. Materials and Methods: This descriptive-analytical study was conducted on 95 patients,  aged 30-65 years with type 2 diabetes. Data were collected through interviews using a three part questionnaire covering demographic data, self-efficacy and self-care in patients with type 2 diabetes, and were analyzed using SPSS software version 20, and descriptive and analytical statistics (Pearson correlation square, independent t-test, one way variance and multivariate regression model). Results: Mean score of self-efficacy was 71.5±14.1 and for self-care the mean score was 53.6±11.7. In this study, Spearman correlation square showed a significant positive correlation between self-care and self-efficacy (P<0.001). Also, significant positive correlations were found between self-efficacy and all the aspects self-care. Conclusions: This study showed a significant positive correlation between self-care and self-efficacy, demonstrating that self-efficacy is a significant requisite for self-care behavior must be emphasized in diabetes-related educational programs.