Douglas was born on September 25, 1944 in New Brunswick, New Jersey, the first child of actor Kirk Douglas and Bermudian-born actress Diana Dill. His paternal grandparents were Jewish immigrants from Gomel in Belarus (at that time a part of the Russian Empire). His mother was from Devonshire Parish, Bermuda; Douglas's maternal grandfather, Lieutenant Colonel Thomas Melville Dill, served as Attorney General of Bermuda.

Michael Douglas' Family Tree