Purpose: To determine the predictors of agreement with writing advance directives (ADs) among older Korean adults. Design: This was a secondary analysis of a study that compared the differences in knowledge, experience, and preference about ADs between community and facility-dwelling older adults. Data were collected through self-reported questionnaires. In this study, after 25 cases were excluded from the original sample (N = 181) for incomplete data, a sample of 156 was analyzed using multiple logistic regression analysis. Results: Older adults’ experiences with having thought about life-sustaining treatments, odds ratio (OR) = 4.02, 95% confidence interval (CI) [1.56, 10.38], agreements with legalization of ADs, OR = 4.68, 95% CI [1.69, 12.96], and wishes to obtain information about medical status, OR = 3.78, 95% CI [1.66, 8.64], were identified as the predictors of agreement with writing ADs. Implications for Practice: Discussion channels and educational programs about ADs should be developed for older Korean adults.