Iridaceae is a family of plants in Order Asparagales, taking its name from the Irises. It includes a number of other well known cultivated plants, such as the Freesia, the Gladiolus and the Crocus.

Members of this family are perennial plants, with a bulb, corm or rhizome. The plants grow erect, and have leaves that are generally grass-like, with a sharp central fold. Some examples of members of this family are the Blue Flag and Yellow Flag.