Background: Spirituality can give meaning to life, providing support and guidance in complex situations. Despite its importance in palliative care, the role of spirituality for family caregivers of patients under exclusive palliative care has not received enough attention in the literature. We aimed to address the correlation between spirituality and the emotional burden of family members of patients under exclusive palliative care. Methods: This transversal study was conducted in a tertiary private teaching hospital, in SaƵ Paulo, Brazil.