<![CDATA[Introduction: Diabetes mellitus is a chronic disease whose prevalence continues to increase and requires long-term management to prevent complications. One important factor in the successful management of diabetes mellitus is the patient's level of knowledge about the disease. Good knowledge is expected to encourage patients to carry out optimal self-management, such as regulating diet, physical activity, monitoring blood sugar levels, medication adherence, and foot care. This study aims to determine the level of knowledge of diabetes mellitus patients about diabetes mellitus at the Semanding Community Health Center, Tuban Regency. Methods: This study used a descriptive research design. The population in this study was all diabetes mellitus patients in the working area of the Semanding Community Health Center, Tuban Regency. The sampling technique used was consecutive sampling, with a sample size of 73 respondents. The research instrument used was the Diabetes Knowledge Questionnaire (DKQ-24). Data analysis was carried out descriptively with the presentation of frequency distributions and percentages. Results: The results showed that the majority of respondents had a good level of knowledge, namely 58 respondents (79.4%), while 12 respondents (16.5%) had a sufficient level of knowledge and 3 respondents (4.1%) had a poor level of knowledge. Conclusions: This study concludes that the majority of patients with diabetes mellitus at Semanding Community Health Center, Tuban Regency, have a good level of knowledge about diabetes mellitus. However, knowledge of foot care still needs to be strengthened. Patients are encouraged to improve their understanding and practice appropriate foot care, including daily foot inspection and the use of appropriate footwear. These findings highlight the importance of continuous diabetes education, particularly regarding foot care, to support patients in managing their condition effectively.]]>
