Riparian areas have been identified as “the most important ecosystems on the landscape” for protecting threatened and endangered species, increasing biodiversity, providing clean water, and addressing climate change. Multiple stressors have caused widespread degradation of riparian zones and reduced their capacity to provide valuable ecosystem services. This pattern has alarmed scientists, land managers, and policy makers, resulting in billions of dollars of investment in restoration of these ecosystems. Many restoration projects fail to achieve desired outcomes, often due to completing actions at reach-scales rather than at the landscape-level. Opportunities exist in large intact landscapes such as the Greater Yellowstone Ecosystem (GYE) to complete coordinated restoration that improves treatment efficacy, but this approach requires objective tools to help managers prioritize restoration actions. We used nationally available data to evaluate current and projected conditions of riparian ecosystems in the GYE. This assessment provides input data for a decision-support tool to aid managers in identifying intact and climate-resilient riparian ecosystems for conservation, as well as riparian areas that could be considered high-priorities for restoration. Overall, we found that most riparian areas in the GYE are in good condition according to the Riparian Condition Assessment Tool, but that many streams are expected to see substantial shifts in key hydrological variables that influence riparian condition including summer stream temperature, summer stream flow, and runoff timing. Beaver-based restoration, including translocation or beaver mimicry, may increase the resilience of riparian ecosystems to climate-induced stressors. Based on the Beaver Restoration Assessment Tool, more than a third of streams in the GYE require low effort to reestablish beaver dams on the landscape. These results will help managers improve effective use of limited resources by highlighting riparian ecosystems that are the best candidates for long-term conservation or highly impactful restoration actions to improve riparian condition across the GYE.