The practice of child marriage is still very common in Indonesia and is among the most critical in the Province of West Nusa Tenggara (WNT). In this Province, in 2012, 5,8 % of the girls under 15 were married while the national rate was 2.6%. The negative consequences of early marriage have been acknowledged. The rates of maternal and infant mortality are still high, as well as domestic violence is. Married at a too early age, girls and boys drop out of school and struggle to sustain themselves economically. Combating early marriage has become a priority, and WNT is the first Indonesian Province to take initiative and innovate to curb underage marriage. With the support of GIZ, a broad coalition of government and civil society actors was fostered, involving community and traditional leaders, women’s organizations, but also youth representatives, a novum in Indonesia. At the occasion of a regional workshop for child marriage prevention, the actors in WNT engage with national stakeholders and reaffirm their joint commitment. As another step in encouraging youth participation, a Provincial Youth Forum is also officially launched.