List of unmade Doctor Who serials and films

During the long history of the British science fiction television program Doctor Who, a number of stories were proposed but never fully produced. Below is a list of unmade serials submitted by recognized professionals. Although the BBC intended to produce the series, they were not made. Many have since been the subjects of features in Doctor Who Magazine or other professional periodicals and books devoted to the television show.

Such series existed during the tenure of each of the previous thirteen incarnations of the Doctor. The reasons for the series being incomplete include strike action (which caused the partially filmed Shada to be abandoned), actors leaving roles (The Final Game, which was cancelled after Roger Delgado's death), and the series being put on hiatus twice—once in 1985 and again in 1989—causing the following series to be shelved.

The plots of the unmade series also vary. The theme of a civilization in which women are dominant was proposed twice—for The Hidden Planet and The Prison in Space. In some cases, elements of unmade series were adapted or moved from one to another. For example, Song of the Space Whale was intended to be the introduction of Vislor Turlough until it was repeatedly set back, causing Mawdryn Undead to be Turlough's first appearance.

Some unused stories have been adapted for other media. Shada was made into an audio play of the same name, while several unmade series compiled into an audio series released by Big Finish called The Lost Stories.