Objective: The purpose of this study is to introduce a standardised assessment tool by verifying the reliability of the translated Korean version of the Feeding Abilities Assessment (K-FAA), which was developed to suit Korean culture. Methods: The research subjects were 65 patients with dementia living in nursing homes. The K-FAA was completed by verifying the suitability of translation and reverse translation. The validity of the K-FAA was established through content validity, while its reliability was analysed based on internal consistency reliability for the items, test–retest reliability and inter-rater reliability. Results: The content validity index determined, based on the assessment of professors, occupational therapists, and nurses, was more than.70. Cronbach’s α was more than.929, showing good internal consistency. A test–retest reliability of.884 was derived using Pearson’s correlation coefficient (p <.01), and an inter-rater reliability of.800 was derived using the kappa coefficients; intraclass correlation coefficient was.897, which also indicated good reliability. Conclusion: The K-FAA was modified to fit the Korean domestic situation, and this assessment had high reliability. Therefore, K-FAA can evaluate the feeding ability of patients with dementia. Future studies should focus on providing evidence-based data to maintain or supplement the feeding ability of patients with dementia in Korea.