| Millennium Shock | |
| Author: | Justin Richards |
| Series: | Doctor Who book: Past Doctor Adventures |
| Release Number: | 22 |
| Subject: | Featuring: Fourth Doctor Harry |
| Release Date: | May 1999 |
| Publisher: | BBC Books |
| Pages: | 283 |
| Isbn: | 0-563-55586-6 |
| Preceded By: | Players |
| Followed By: | Storm Harvest |
Millennium Shock is a BBC Books original novel written by Justin Richards and based on the long-running British science fiction television series Doctor Who. It features the Fourth Doctor and Harry, and is a sequel to Richards' Virgin Missing Adventures novel System Shock.
In 1999, the Doctor and Harry deal with a plot by the Voracianshybrids of alien reptiles and malevolent office equipmentto take advantage of the Y2K problem to conquer the Earth.