Space Cadets is a British television programme made by Zeppotron (a division of Endemol UK) for Channel 4. Presented by Johnny Vaughan, it was aired across ten consecutive nights beginning on 7 December 2005, with the final episode aired on the evening of 16 December 2005.

The series was a hoax at the expense of its contestants, who were told they were being trained as cosmonauts at a Russian military base before undergoing a five-day trip into low Earth orbit. In reality, the entire series was filmed in Suffolk, and the contestants did not leave Earth. The series was accompanied by a behind-the-scenes sister show Space Cadets: The Satellite Show, with interviews and phone-ins.