This paper examines risk and protective factors associated with delinquent behaviour among Pacific youth living in New Zealand (NZ). As part of the longitudinal Pacific Islands Families study, 11-year-olds Pacific youth participated in multidisciplinary interviews which included questions about involvement in delinquent behaviours. Peer pressure was the strongest risk factor for delinquency, and protective factors were higher self-perception, teacher evaluation scores, and perceived support from friends. Pacific boys reported significantly more delinquent behaviours than Pacific girls. Maternal acculturation was significantly associated with the delinquent behaviour of youth. Youth of mothers categorized as integrators (high Pacific/high NZ) having lower odds for delinquency than youth of mothers categorized as assimilators (low Pacific/high NZ). Youth from the largest Pacific Island groups (Samoa, Tonga and Cook Islands) were also significantly more likely to engage in delinquent behaviour than those from smaller island groups. Implications of these findings for prevention and further research are discussed.