This narrative literature review explores how perceived stress affects sleep quality in dementia caregivers by examining various factors. Ten studies from 2013 to 2022 across four continents were analyzed, focusing on caregiver stress levels, sleep quality, caregiver burden, and depression. Higher stress levels were linked to poorer sleep quality, alongside factors like emotional distress and disrupted sleep patterns. The findings highlight the importance of targeted interventions to reduce stress and improve sleep quality among dementia caregivers, suggesting the need for longitudinal and empirical studies with standardized measures for a better understanding.