Aims: Very little works have been reported on the issues of burden perceived by the caregivers of head-and-neck cancer (HNC) patients. Job of the caregiver is complex, and it limits their social, psychological, and economical well-being. Our study aims at assessing caregivers' strain during radiation therapy (RT) of HNC patients using the Modified Caregivers' Strain Index (MCSI) Scale. Materials and Methods: In this single-institutional cross-sectional study, we interviewed caregivers of HNC patients undergoing curative RT.