This is a list of known historical hoaxes on Wikipedia. It is considered a hoax if it was a clear or blatant attempt to make up something, as opposed to libel, vandalism or a factual error. It is considered notable if it evaded detection for more than one month or was discussed by reliable sources in the media. And, most likely, there are many as-yet-unknown hoaxes not listed here.
A hoax can be added to this page if it meets the requirements above. Sort by the length of time that the hoax page was visible in mainspace. Do not list Wikipedia April Fools' Day pranks, or factual articles about encyclopedic notable hoaxes.