Nierembergia linariifolia, called the narrow-leaved cupflower, is a species of plant described by Robert Graham. Nierembergia linariifolia is part of the genus Nierembergia and the family Solanaceae. It has gained the Royal Horticultural Society's Award of Garden Merit.
It is native to central South America, and has been introduced to New South Wales, Australia.
The following subspecies are accepted: