Cosmos: A Personal Voyage is a thirteen-part television series written by Carl Sagan, Ann Druyan, and Steven Soter, with Sagan as presenter. It was executive-produced by Adrian Malone, produced by David Kennard, Geoffrey Haines-Stiles and Gregory Andorfer, and directed by the producers, David Oyster, Richard Wells, Tom Weidlinger, and others. It covered a wide range of scientific subjects, including the origin of life and a perspective of our place in the universe.

The series was first broadcast by the Public Broadcasting Service in 1980 and was the most widely watched series in the history of American public television until The Civil War. As of 2009, it was still the most widely watched PBS series in the world. It won an Emmy and a Peabody Award and has since been broadcast in more than 60 countries and seen by over 500 million people. A book was also published to accompany the series.