--- - |2 There is a dearth of research on delinquency, school context, and risk factors across developed and developing nations. Using representative samples and matched surveys, we examined delinquency among cohorts in Mumbai, India (N = 3,717); Victoria, Australia (N = 1,842); and Washington State (WA), United States (N = 1,828). We used multivariate Poisson hierarchical linear modeling. Risk factor and delinquency levels varied across sites. Delinquency clustered within certain schools, particularly in Mumbai. Community disorganization exhibited an association with delinquency as a school‐level context effect in Mumbai and Victoria. Peer delinquency, sensation seeking, and poor family management exhibited cross‐nationally consistent associations with delinquency. Programs that target schools, the clustering of problem behaviors, and cross‐nationally consistent risk factors should be considered internationally. - Journal of Research on Adolescence, EarlyView.