Transforming tourism through sustainable procurement aims to introduce the strategic role that sustainable procurement can play to transform tourism by scaling up the market of sustainable products and services in the sector, enabling the reduction of GHG emissions and the shift towards a more resilient, resource efficient development. The document intends to inform dialogues on how best to incorporate circularity and sustainability in procurement practices of tourism businesses and illustrate to which extend tourism professionals have already successfully done so. It is addressed to corporate buyers and business leaders in the tourism sector as well as policy makers. It has been developed as part of the United Nations Environment Programme work on sustainable consumption and production in the tourism value chain.