Objectives: This study aimed to evaluate good death (end-of-life quality of life) from the perspective of bereaved family members. Methods: We conducted a cross-sectional, anonymous, self-report questionnaire survey for bereaved family members by web survey. Outcomes were achievement of a good death (Good Death Inventory, GDI). We compared the outcomes between with and without dementia. Results: 163 and 224 dying elderly patients with and without comorbid dementia were analyzed from bereaved family members’ responses. The achievement of good death were significantly different (GDI scores, 4.2±1.0, 4.4±0.9, Adj P=0.053) as regards “maintaining hope and pleasure,” “good relationship with family,” and “independence.” Conclusion: The achievement of good death was not significantly different between the dying elderly patients with and without comorbid dementia. Psychosocial care for informal caregivers would be important for better quality of dying in the terminally ill elderly patients with dementia.