Applying the DASH diet to people with hypertension can reduce blood pressure. However, the existing phenomenon shows a low adherence to this diet. Appropriate methods of providing education are still needed as an effort to increase knowledge, attitudes, and dietary adherence. The study aimed to determine the effectiveness of educating elderly hypertensives models on knowledge, attitudes, and adherence to DASH (Dietary Approaches to Stop Hypertension) in community health centers. The study was a quasi-experimental design with one group pre-test and post-test, using purposive sampling with a sample of 40 people. The intervention had for two weeks. Collecting data using guided interviews with questionnaires that included socio-demographic characteristics, knowledge, attitudes, and adherence to the DASH diet. Statistical analysis using statistical paired sample t-test, Wilcoxon rank, and McNemar tests. The average age of the respondents was 62.62 years. Most of the women were unemployed, had hypertension < 5 years, and had a family history of hypertension. After the health education intervention, there was an increase in knowledge (p = 0.000), attitude (p = 0.000), and adherence to the DASH diet (p = 0.000) with p < 0.05. The elderly hypertensive health education model is effective in increasing the knowledge, attitudes, and adherence of elderly hypertensive patients to the DASH diet. It takes the support of families and health workers to achieve optimal DASH dietary adherence