Jay Frederick Grinney is an American health care executive who served as president and chief executive officer of Birmingham, Alabama-based HealthSouth Corporation from 2004 to 2016. He was appointed during a period of corporate restructuring following the company's 2003 accounting fraud disclosure and led the publicly traded health care provider through a period of strategic expansion. A graduate of St. Olaf College and Washington University in St. Louis, he previously held senior leadership roles at Hospital Corporation of America (HCA). HealthSouth later changed its corporate name to Encompass Health Corporation in 2018.