Iris:
- a thin, circular structure in the eye
- the 2001 film about Iris Murdoch, British novelist
- the personification of the rainbow and messenger of the gods, also known as one of the goddesses of the sea and the sky
- a genus of praying mantis
- a lesser-known psychedelic drug and a substituted amphetamine
- a shade of colour ranging from blue-violet to violet
- a genus of 260 -300 species of flowering plants with showy flowers