Purpose: The aim of this study was to evaluate the validity and reliability of the Korean version of the Person-centered Care AssessmentTool (P-CAT). Methods: The English P-CAT was translated into Korean with forward and backward translation. Survey datawere collected from 458 staff in 17 long-term care facilities in Korea. Construct validity and criterion related validity were evaluated. Cronbach’s alpha was used to assess reliability. Results: The Korean version of P-CAT was shown to be valid homogeneously by factor,item and content analysis. Internal consistency reliability was satisfactory in which the values of factor 1, factor 2 and the totalscale were .84, .77 and .86 respectively. Exploratory factor analysis supported the construct validity with a two-factor solution. Factorloadings of the 13 items ranged in .34~.80. Criterion validity to the Person-centered Climate Questionnaire-staff (PCQ-S) was .74(pqqqlt;.001). Conclusion: The Korean version of the P-CAT was found to be an applicable instrument with satisfactory reliability andvalidity for further use in measuring successful person-centered care in long-term care facilities for older persons.