In November 2021, the Conference of the Parties (COP) to the United Nations Framework Convention on Climate Change (COP26) met in Glasgow, UK, to deliver on the ambitions set out in the Paris Agreement. The International Centre for Integrated Mountain Development (ICIMOD) worked with its regional member countries of the Hindu Kush Himalaya (HKH) region to ensure mountain voices were heard at COP26. To do so, we launched the HKH2Glasgow campaign. The aim of the campaign was to (1) promote ambitious climate action for the HKH at COP26 and (2) launch a framework to scale up investment in mountain-specific climate priorities.