Carnival of Monsters is the second serial of the tenth season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 27 January to 17 February 1973.

In the serial, set on the planet Inter Minor, the alien time traveller known as "The Doctor" (in his third incarnation, played by Jon Pertwee) and his travelling companion Jo Grant (Katy Manning) are trapped inside a miniscope, a device used by the showman Vorg (Leslie Dwyer) to shrink life forms and put them on display for entertainment.

It is the first serial since The War Games (1969) in which the Doctor is allowed to pilot the TARDIS completely under his own control.