The 28th Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC COP28) in Dubai marked a significant milestone for the advocacy in advancing women’s, children’s and adolescents’ health (WCAH) in the climate crisis. In the face of climate change, pregnant and lactating women, newborns, children, and adolescents find themselves uniquely vulnerable, as highlighted by the powerful WHO-UNICEF-UNFPA call to action on climate change and maternal, newborn, and child health. Despite contributing the least to greenhouse gas emissions, these vulnerable groups, both current and future generations, are poised to endure the harshest consequences throughout their lifetimes. It's an unjust reality where those least responsible for the problem are set to bear the heaviest burden. Through the amplification of the recommendations of the PMNCH Advocacy Brief on climate change and WCAH, PMNCH and its leaders played a pivotal role at COP28 in advocating for