朱苏德拉，或者译为祖苏德拉（Ziusudra，原意是「长寿者」）是苏美神话中的人物，希腊化的名字则是西苏特罗斯（Xisuthros）。在阿卡德文明里，与之相似的人物是阿特拉哈西斯（Atrahasis，意思是「极其智能者」）与乌特纳匹什提姆（Utnapishtim，意思是「他创建了生命」）。他们是上古西亚文化中，大洪水传说里的英雄。

最早的大洪水传说，是用苏美语言写成。年代是前2600年，如今只保留在零碎的片段中。这段纪录也是已知最早的文学作品之一。与之平行的故事，也出现在其他文化的传说中，例如《旧约圣经》里的诺亚方舟。

Ziusudra (also Zi-ud-sura and Zin-Suddu; Hellenized Xisuthros: "found long life" or "life of long days") of Shuruppak is listed in the WB-62 Sumerian king list recension as the last king of Sumer prior to the deluge. He is subsequently recorded as the hero of the Sumerian flood epic. He is also mentioned in other ancient literature, including The Death of Gilgamesh and The Poem of Early Rulers, and a late version of The Instructions of Shuruppak refers to Ziusudra. Akkadian Atrahasis ("extremely wise") and Utnapishtim ("he found life"), as well as biblical Noah ("rest") are similar heroes of flood legends of the ancient Near East.