Background: One of non-communicable diseases that often occur in the elderly is diabetes mellitus. Diabetes mellitus is the number 4 most common disease in DIY in 2016. 90 - 95% of patients with diabetes mellitus are Type 2 Diabetes Mellitus (Type 2 DM). Diet is the primary treatment for managing diabetes mellitus. The important factor in dietary compliance is family support. Objective: This study aims to determine the relationship of family support with dietary compliance in elderly with Type 2 DM. Research method: This research is a descriptive correlational research with cross sectional approach. The subjects of this study were elderly Type 2 DM. The sampling technique in this study was purposive sampling with a total sample of 44 respondents. This data analysis uses the somer’s d statistical test. Results: Family support for most elderly Type 2 DM in good category (61.4%). Diet compliance of most elderly Type 2 DM is in good category (54.5%). Statistical test results showed there is relationship between family support with dietary compliance (p value = 0,001). Conclusion: There is a relationship between family support with dietary compliance in elderly Type 2 DM in the Mantrijeron Community Health Center work area.