This study explores the social-cultural adjustments of North Korean defectors with respect to their self-esteem and internal attribution. The data were obtained from a survey of 195 North Korean defectors who had recently entered South Korea. The respondents had moderate difficulties in their social-cultural adjustment consisting of social activity restriction, discrimination, and social exclusion. Their social-cultural adjustment was positively associated with internal attribution. Those with internal attribution tended to have fewer problems in adjusting to the social systems and culture of South Korea. The findings of this study imply that psychological resources play a role in enhancing the social-cultural adjustment of North Korean defectors.