The purpose of this qualitative study is to explore experiences of naturalistic interpersonal contact with persons with intellectual and developmental disabilities (IDD) and attitudes toward persons with IDD among Korean American adolescents and young adults. In interviews with 12 Korean American high school and college students, Korean American participants reported six common themes regarding their experiences of interpersonal contact with persons with IDD: (1) affective attitude, (2) behavioral attitude, (3) cognitive attitude, (4) communication with persons with IDD, (5) moments of having a positive attitude, and (6) comparisons of attitudes in the United States and Korea. Recommendations for research and practical implications are discussed.