Although the study of delinquency has previously focused on identifying individual, family, peer, and social risk and protective factors, little empirical research has studied cultural factors and their relations to delinquency. In a large community sample of 329 Chinese, Cambodian, Laotian/Mien, and Vietnamese youths, individualism was positively related to, and collectivism negatively related to, self-reported delinquency, with partial mediation through peer delinquency (PD). Although the percentage of variance in delinquency attributable to individualism?collectivism was small compared to PD, it cannot be discounted as trivial. The results also supported the measurement and structural invariance of these associations across the 4 ethnic groups.