The literature on risk factors for joining street gangs has relied mainly on surveys of US youth. This article addresses the consistency of correlates of street gang involvement in several European countries. We utilize self-report surveys of middle school students in 19 European countries. We employ the Eurogang definition of gang membership and address the degree to which risk indicators from multiple ecological domains surface with some regularity across these different country contexts. Delinquent offending and negative peer behaviours emerge as the most influential and consistent correlates of gang involvement. We consider the implications of our findings for revealing a generalizable pattern of gang participation among European youth as well as the theoretical implications of the significant gang correlates.