Dragonfire is the fourth and final serial of the 24th season of the British science fiction television series Doctor Who, which was first broadcast in three weekly parts from 23 November to 7 December 1987. This serial marked the departure of Bonnie Langford as Mel Bush and the introduction of Sophie Aldred as companion Ace.

The twenty-fourth season of British science fiction television series Doctor Who began on 7 September 1987 with Sylvester McCoy's first story Time and the Rani, and ended with Dragonfire. John Nathan-Turner produced the series, with Andrew Cartmel script editing.