Roy J. Bostock is an American investor, businessman who served as chairman of Yahoo! Inc. from January 2008 to May 2012. He currently serves on the board of directors of Delta Air Lines. From 2000 to 2001 he served as chairman of the advertising firm BCom3 Group, Inc. He is the former chairman of the Partnership for a Drug-Free America and is a Trustee Emeritus of Duke University.On 29 July 2020 he was named Chairman of the Board for cellular medicine startup GID BIO Inc., a company that has a potentially break-through treatment for osteoarthritis in late-stage regulatory review.