Caregivers are an important source of support for patients in palliative care. Comfort is an important concept in nursing care for both patients and their families, and nurses aim to increase comfort. The aim of the study was to determine the comfort level and influencing factors in caregivers of palliative care patients. The research sample consisted of 102 caregivers related to palliative care patients. The data were obtained with an Individual Information Form, the Edmonton Symptom Assessment Scale (ESAS) and the End of Life Comfort Scale (Caregiver/Family). The study was conducted in the palliative care clinic of Aksaray University Training and Research Hospital between October 2018 and April 2019. There was a significant relationship between the total comfort score of the caregivers and the patient's performance status, the caregivers' age, their economic situation, the length of the caregiving period and receiving help in care (social support) (p < 0.05). Providing comfort is an important function and challenge for holistic nursing care, as comfort is a lifelong need in health and disease. Caregivers in the risk group should be aware of this issue and necessary precautions should be taken.