Iris timofejewii is a species of flowering plant in the genus Iris, and also in the subgenus Iris. It is a rhizomatous perennial, from the mountain slopes of the Caucasus and Dagestan. It has narrow, evergreen, falcate (sickle-shaped), grey-green (glaucous) leaves, and a short flowering stem just taller than the leaves. Each stem has 1–2 flowers in shades of violet, with white beards that have purple tips. It is cultivated as an ornamental plant in temperate regions.