Risk assessment of organised crime groups can assess different types of risk at a group- or individual-level. Operational definitions of key concepts, units of analysis and type of data are a few issues prevalent in risk assessment (RA) instruments when assessing risk in gangs on a group-level. Do these methodological issues also affect risk assessment in OCG members on an individual level? This review will also focus on how risk assessment instruments are used when assessing individual risk in gang members. The review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Five databases were included in the review. The abstract screening process yielded 47 studies suitable for full-text screening. Only 8 studies qualified for inclusion after applying the eligibility criteria. A narrative synthesis revealed that risk assessment in OCG members were focused on an adolescent population within a mainly western cultural setting. The RA tools were mostly used in custody settings but also took place in the community and in schools. Variations on RA instruments based on Level of Service Inventory (Andrews & Bonta, 2010) were the most common ones, but other frameworks and models assessing risk were also used. Similar methodological issues were observed on an individual-risk assessment level as on a group level, resulting in a negative impact on validity of RA instruments when used on OCG members.