Iris odaesanensis is a beardless iris in the genus Iris, in the subgenus Limniris and in the Chinenses series of the species. It is a rhizomatous herbaceous perennial from China and eastern Korea. It has blue-green grass-like leaves, short stem, 1 or 2 fragrant, white or off-white flowers in spring to early summer. It is a rare plant in the wild, but it is cultivated in east Asia.