Purpose: To record the health promotion behaviors of family caregivers of stroke survivors, as well as potential determinants that could affect these behaviors. Methods: A cross-sectional study was carried out through home visits in the Attica region using the convenience sampling method. The studied population included 109 survivors who had suffered a stroke and experienced functional problems, and their 109 primary caregivers, who were family members, lived in the same house and were fully responsible for their care. The dependent variables were the caregivers’ health promotion behaviors, while the independent variables were the survivors and caregivers’ demographic characteristics, survivors’ functional capacity, depression, social support and changes in caregivers’ lives from caring. Results: Better health promotional behaviors were associated with the following: patient having advanced age and a high level of functionality, caregivers assessing their own state of health as “good”, greater social support, a higher educational level and a higher income level. In addition, more hours of patient care were associated with a less healthy lifestyle for caregivers. Conclusions: Promoting the health of family caregivers of stroke survivors is crucial for both survivors and caregivers. For this reason, it is of great importance to detect factors that affect the health promotion behaviors of caregivers in order to carry out appropriate interventions and improve their quality of life.