End Day is a 2005 docu-drama produced by the BBC. It aired on the National Geographic Channel, on the TV series National Geographic Channel Presents, and BBC Three. It depicts a set of five doomsday scenarios. The documentary follows the fictional scientist Dr. Howell, played by Glenn Conroy, as he travels from his London hotel room to his laboratory in New York City, and shows how each scenario affects his journey as well as those around him, with various experts providing commentary on that specific disaster as it unfolds. After each 'End Day' runs its course, the day repeats, this time with the next scenario panning out.

The following descriptions of the program were released by the BBC:

"Imagine waking up to the last day on Earth..."

"Inspired by the predictions of scientists, End Day creates apocalyptic scenarios that go beyond reality. In a single hour, explore five different fictional disasters, from a giant tsunami hitting New York to a deadly meteorite strike on Berlin."