Objective: This study is a control group intervention study to determine the effect of web-based education on diabetes self-management in individuals with type 2 diabetes. Methods: The study was conducted in the Training and Research Hospital Diabetes Education Unit of Hitit University. The study was completed with 75 people (intervention 38, control 37). The data were obtained in the web site through patient identification form, self-management perception scale in diabetes, diabetes attitude, self-care scale and HbA1c, HDL, LDL values were followed by providing training and counseling. The values followed were viewed at the third and sixth months. Written permission was obtained from ethics committee and participants. The data of the study were evaluated with number, percentage, mean, pearson chi-square, independent t-test, repetitive analysis and variance analysis. Results: Statistically significant decrease in HbA1c and LDL values, diabetes self-management scale, diabetes attitude scale and self-care scale scores were found to be significantly different between the intervention and control groups. Conclusion: Web-based education and follow-up studies are effective in decreasing HbA1c values in increasing diabetes self-management skills of individuals with type 2 diabetes. It is recommended to use as a complementary tool in health care services for type 2 diabetes management.