Iris nigricans is a flowering plant in the family Iridaceae. It is the national flower of Jordan. The flowers are blackish-purple and 12–15 centimetres (4.7–5.9 in) in diameter, and the plants are 35 cm (14 in) tall with recurved leaves. It needs direct sun and sharp drainage. It is endemic to Jordan and is an endangered species.

There are 8 other irises native to Jordan, and most of these are also endangered. The species bearing black flowers are sometimes confused with Iris nigricans.