When global leaders met at the UN in September, 2023, marking the midpoint to the Sustainable Development Goals (SDGs) 2030 deadline, they agreed that progress must be accelerated. For adolescent girls (aged 10–19 years) in particular, progress is falling short. Yet global leaders failed once again to devote the necessary attention to ensuring that adolescent girls are not left behind. Data show that adolescent girls are not receiving the support they need to thrive and are continuously disadvantaged by inattention and broad inequalities that limit their tremendous potential.