The Global Health Advocacy Incubator’s Health Advocacy Training & Collaboration Hub (HATCH) is a free online learning platform for public health advocates worldwide. HATCH offers self-paced courses, toolkits, case studies, templates, and issue briefs in multiple languages, all grounded in decades of locally led advocacy experience. It also provides secure spaces for advocates and organizations to share expertise, exchange knowledge, and collaborate through live events, forums, and resource libraries. HATCH draws on decades of evidence-based, locally led advocacy experience from the Campaign for Tobacco-Free Kids, GHAI, and partners worldwide.