YLabs designs programs that address the key health challenges facing disadvantaged youth around the world. We work with national governments and local partner organizations to create, scale, and evaluate solutions co-designed with young people living in these communities. We bring a unique mix of human-centered design, adolescent medicine, and implementation science to the global problems facing youth. Founded in 2014 at the Harvard T. H. Chan School of Public Health, our work has been granted international innovation awards from the Bill and Melinda Gates Foundation and the Packard Foundation, among others. We are based in California and currently work in thirteen countries in Sub-Saharan Africa, South Asia, and South America.