Noah's Ark (Hebrew: תיבת נח; Biblical Hebrew: Tevat Noaḥ) is the vessel in the Genesis flood narrative through which God spares Noah, his family, and examples of all the world's animals from a global deluge. The story in Genesis is repeated, with variations, in the Quran, where the Ark appears as Safinat Nūḥ (Arabic: سَفِينَةُ نُوحٍ "Noah's ship") and al-fulk (Arabic: الفُلْك).

Early Christian and Jewish writers believed that Noah’s Ark existed, and unsuccessful searches for Noah's Ark have been made from at least the time of Eusebius (c. 275–339 CE); believers in the Ark continue to search for it in modern times, but no confirmable physical proof of the Ark has ever been found. No scientific evidence has been found that Noah's Ark existed as it is described in the Bible. More significantly, there is also no evidence of a global flood, and most scientists agree that such a ship and natural disaster would both be impossible. Some researchers believe that a real (though localized) flood event in the Middle East could potentially have inspired the oral and later written narratives; a Persian Gulf flood, or a Black Sea Deluge 7,500 years ago has been proposed as such a historical candidate.