William Dana

William Dana or Bill Dana may refer to:


 * Bill Dana (1924–2017), stage name of William Szathmary, American comedian, actor, and screenwriter
 * William H. Dana (1930–2014), NASA test pilot and astronaut
 * William Parsons Winchester Dana (1833–1927), American artist
 * Mrs. William Starr Dana, name used by Frances Theodora Parsons (1861–1952), American botanist and author