Objective: Multiple sclerosis is a chronic, progressive neurological disease that, due to its special nature, has various physical and mental influences on the patients and their family's lives, decreasing the quality of life and threatening the meaning of life. The purpose of the present study was to evaluate the effectiveness of the group hope therapy training on the quality and the meaning of life in patients with multiple sclerosis and their family caregivers. Method: This quasi-experimental study was performed using pretest-posttest and control group.