The Sirens of Time is a 1999 audio drama based on the long-running British science fiction television series Doctor Who. It was the first Big Finish Productions audio drama based on the series and became the first in the company's Main Range. The story was written and directed by Nicholas Briggs, and stars Peter Davison, Colin Baker and Sylvester McCoy, who reprise their roles as three incarnations of the Doctor. In the story, the three Doctors team up to defend their home planet of Gallifrey.