Background: Bladder cancer patients’ care is often managed by caregivers, yet caregiving can create a physiologic and emotional burden that compromises the caregivers’ own quality of life (QOL). Our objective was to determine the impact of disease stage on caregiver QOL among a large national cohort of bladder cancer patients. Methods: We performed a cross-sectional survey of bladder cancer caregivers using the Bladder Cancer Advocacy Network Patient Survey Network and Inspire platforms to determine caregiver QOL using the CareGiver QOL questionnaire (CarGOQoL). Caregivers were also queried regarding demographic, socioeconomic and clinical characteristics of their loved one. We present descriptive statistics and a multiple linear regression model to identify factors independently associated with QOL domain score. Results: 132 respondents self-identified as caregivers of patients with bladder cancer. Among respondents, 85% were a spouse, 86% were female, and 97% were white. The mean age was 63 years (range 34 to 72 years) and 73% of respondents completed college. The highest cancer stage for patients was non-invasive in 42%, muscle-invasive in 33%, and metastatic in 24%. On bivariable analysis, stage was associated with leisure and social support but was not associated with global QOL, psychologic or physical well-being, burden, relationship with healthcare, administration and finances, coping, self-esteem or private life. However, on multivariable analysis controlling for age, race, years since diagnosis, and comorbidity, stage was significantly associated with Caregiver QOL (p=0.04). Conclusions: Disease stage significantly impacts QOL among bladder cancer caregivers. As the caregiver is increasingly considered as a stakeholder in survivorship efforts, future interventions should consider targeting social support among caregivers of patients with advanced bladder cancer.