Background: Understanding and addressing health literacy in long-term care facilities has the potential to improve residents’ wellbeing, self-care agency and dignity. This review aimed to map the current evidence on health literacy among older adults living in long-term care facilities. Methods: This scoping review was conducted in accordance with the Johanna Briggs Institute scoping review methodology. The search strategy was guided by the concepts of ‘health literacy’ and ‘residential aged care’. Four databases were searched from inception to October 2025. Eligible studies included those conducted among older adults living in long-term care that measured health literacy, and/or evaluated an intervention designed to increase health literacy. Two independent reviewers conducted data extraction from full-text articles using a data extraction tool. The PRISMA-ScR checklist guided reporting of findings. Results: Of 1,372 studies identified, seven met the eligibility criteria. Five health literacy measurement tools were used, with six studies using validated tools. Overall, residents’ health literacy was low. Higher health literacy was associated with better quality of life, improved health perception and more positive health-related behaviours. One study reported that a communication-based intervention, known as teach-back, improved health literacy among residents. Conclusion: The available evidence suggests that health literacy represents an important, yet under addressed factor influencing the health of long term care facility residents. Mixed‑methods and co‑designed research is required to clarify long-term care‑specific health literacy and its potential impact on residents’ health.