Examination of the demographic and offense-related characteristics of 1,636 gang members admitted to Canadian federal penitentiaries between January 1, 2006 and August 31, 2009 revealed that there is considerable variation between these groups. Members of Aboriginal, Asian and Street Gangs tended to be admitted at much younger ages than members of Outlaw Motorcycle Gangs (OMG), or members of Traditional Organized Crime (TOC) gangs. Moreover, these younger offenders were more likely to be admitted to prison with a conviction for a violent offense, have higher levels of risk and need, were placed in higher security facilities, and engaged in higher levels of institutional misconduct once imprisoned. Members of TOC gangs, however, had levels of misconduct that were one-third the rate of non-gang offenders admitted during the same era. This study shows that not all gangs pose equal risks to correctional systems, and that gang management or suppression strategies should take their characteristics into account.Despite the fact that correctional systems have invested significant amounts of time and resources in the monitoring, control, and suppression of jail and prison gangs over the past two decades, these security threat groups (STG) remain the bane of correctional staff and administrators. 1 The extant literature has consistently shown Am J Crim Just (2011) 36:265-279