Abstract: Background and Objective: There was an increase in the incidence of patients undergoing hemodialysis therapy in Yogyakarta in 2013 as many as 1426 patients. Hemodialysis patients show signs of malnutrition, which can be identified based on subjective global assessment (SGA). They are recommended to consume high protein as a nutritional support, which can be fulfilled from catfish (Clarias sp.) and formed into abon (one kind of Indonesian food). The aim of this study was to determine the effect of catfish abon provision to nutritional status based on SGA of hemodialysis patients. Materials and Methods: The study was conducted at the Hemodialysis Unit of Panembahan Senopati Bantul Hospital. The research design was quasi-experimental with pre-post design. The sample size of 34 people was taken by purposive sampling. The independent variable of this study was the provision of catfish abon, while the dependent variable was nutritional status based on SGA. Data were analyzed univariate and bivariate by McNemar test. Results: In the pre-intervention condition, most respondents had good nutritional status based on SGA (SGA A category) as many as 30 people (88.2%), while in the post-intervention, all (100%) respondents became of good nutritional status (SGA A category). McNemar test results of the influence of catfish floss on nutritional status based on SGA showed p-value = 0.000 (p<0.05). Conclusion: The provision of catfish abon significantly affects the nutritional status of hemodialysis patients based on SGA.