In Western societies, groups from a minority ethnic background are under-represented in formal mental health care. However, it is unknown if the minority ethnic victims of child sexual abuse differ from majority ethnic victims regarding their help-seeking behaviours. This study used a multi-method design to investigate the prevalence of (in) formal help-seeking after child sexual abuse and the influence of attitudes towards gender roles and sexuality on help-seeking among the Dutch minority ethnic and majority ethnic victims. We also examined differences in reasons not to seek help. Quantitative survey data on help-seeking patterns among 1496 child sexual abuse victims were collected. Four qualitative focus groups were conducted with professionals working in the field of child sexual abuse and minority ethnic groups to explore help-seeking behaviour. No significant differences between ethnicity emerged in help-seeking rates. However, respondents with more liberal gender attitudes were more likely to disclose than conservative respondents. Additionally, an interaction effect was observed between ethnicity and gender attitudes, indicating that, contrary to the main effect, young people of Moroccan and Turkish heritage with more liberal gender attitudes were less likely to disclose abuse. Reasons for not seeking help differed among groups. Focus group members emphasised mistrust towards counsellors and perceptions that inhibit minority ethnic youth from seeking help.