Oral health literacy is a newly emerging field with considerable research potential. The assessment of oral health literacy is crucial for the development of effective health education programs. This study aims to validate the Hong Kong Oral Health Literacy Assessment Tool (HKOHLAT) in a sample of adults. The HKOHLAT is a self-report questionnaire that assesses an individual's ability to understand and use oral health information. The validation of the HKOHLAT will provide a reliable and valid tool for assessing oral health literacy in the Hong Kong population. This study will contribute to the development of effective health education programs that address the oral health needs of the Hong Kong population.