Since 1998, the Commonwealth Fund has conducted an annual international survey to benchmark health system performance across high-income countries. In 2021, the survey will for the third time focus on older adults who are particularly vulnerable to failures in the health care delivery system. The findings will provide important benchmarking data on health system performance and patients’ experiences across 11 countries: Australia, Canada, France, Germany, the Netherlands, New Zealand, Norway, Sweden, Switzerland, the United Kingdom, and the United States.