A non-event is an anticipated or highly publicized event that either does not occur, or simply turns out to be very anticlimactic, boring or is a hoax. Non-events are disappointing, as they are often much hyped prior to their occurrence.

Some notable non-events of recent history have been:

• The much-hyped 1973 appearance of Comet Kohoutek
• The 1986 appearance of Halley's Comet
• The Mystery of Al Capone's Vault - The 1986 live TV special of Geraldo Rivera opening Al Capone's vault, which turned out to contain a bottle of moonshine.
• The Year 2000 problem (Y2K bug)

See also

• Flop