Iris douglasiana, the Douglas iris, is a common wildflower of the coastal regions of Northern and Central California and southern Oregon in the United States.

Two or three flowers are found on each stem, which is of variable height, ranging from 15–80 centimeters (5.9–31.5 in) tall.

[1] Several varieties have been recognized, for example Iris douglasiana var.

oregonensis (R. C. Foster), but the species is highly variable and the varieties may not be well enough defined to be of much practical use.

This plant has gained the Royal Horticultural Society's Award of Garden Merit.