Invaders from Mars is the twenty-eighth audio drama of the British science fiction audio series Doctor Who: The Monthly Adventures from Big Finish Productions.

Initially released as a CD on 28 January 2008, this story was later broadcast on BBC 7 in four weekly parts (starting on 29 October 2005) and was later rebroadcast on the same channel once more (beginning on 19 November 2006).

In Manhattan 1938, the Eighth Doctor and Charley meet a crooked gangster, a Russian spy, a sinister fifth columnist and Orson Welles.

Welles's broadcast of War of the Worlds is just a story, but maybe there really are aliens at loose.

The episode is particularly notable in that 5 of the actors went on to star in the re-booted Doctor Who TV series from 2005, including: This does not include Paul McGann and Katy Manning who had appeared in Doctor Who prior to their appearance in this episode.