Mission statements communicate health care organizations' fundamental purposes and can help potential patients choose where to seek care and employees where to seek employment. They offer limited benefit, however, when patients do not have meaningful choices about where to seek care, and they can be misused. Ethical implementation of mission statements requires health care organizations to be truthful and transparent about how their mission influences patient care, to create environments that help clinicians execute their professional obligations to patients, and to amplify their obligations to communities.