西伯利亚鸢尾（学名：Iris sibirica）是鸢尾科鸢尾属的植物。分布于欧洲以及中国大陆的江苏、湖北、江西等地，目前已由人工引种栽培。

Iris sibirica, commonly known as Siberian iris or Siberian flag, is a species in the genus Iris. It is a rhizomatous herbaceous perennial, from Europe (including France, Italy, Switzerland, Austria, Czechoslovakia, Germany, Hungary, Poland, Romania, Bulgaria, Former Yugoslavia, Belarus, Estonia, Latvia, Lithuania, Moldova, Ukraine and northern Turkey) and Central Asia (including Armenia, Azerbaijan and Siberia). It has long green grass-like leaves, tall stem, 2–5 violet-blue, to blue, and occasionally white flowers. It is cultivated as an ornamental plant in temperate regions.