Given the dire state of health of rivers worldwide and their significant heritage values, there is a need to consider their current representation in protected areas inscribed under the World Heritage Convention and identify challenges and opportunities for increasing their coverage. This study identifies a total of 153 natural, mixed natural/cultural and cultural landscape World Heritage sites that recognise rivers as a source of Outstanding Universal Value. There are challenges associated with the recognition of river sites as World Heritage, but further nominations could be encouraged through amendments to the World Heritage Convention Operational Guidelines to allow greater discretion to be exercised in relation to integrity requirements at inscription and to explicitly acknowledge freshwater use as a basis for recognising mixed natural/cultural and cultural landscape sites. There is also an opportunity to encourage further nomination of river sites by recognising the important implications of World Heritage inscription for international water cooperation. Together, these recommendations provide a path forward for enhancing the place of rivers in World Heritage protected areas.