"MS. Found in a Bottle" is an 1833 short story by American writer Edgar Allan Poe. The plot follows an unnamed narrator at sea who finds himself in a series of harrowing circumstances. As he nears his own disastrous death while his ship drives ever southward, he writes an "MS.", or manuscript, telling of his adventures which he casts into the sea. Some critics believe the story was meant as a satire of typical sea tales.

Poe submitted "MS. Found in a Bottle" as one of many entries to a writing contest offered by the weekly Baltimore Saturday Visiter. Each of the stories was well liked by the judges but they unanimously chose "MS. Found in a Bottle" as the contest's winner, earning Poe a $50 prize. The story was then published in the October 19, 1833, issue of the Visiter.