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.

Range: It is native to central South America, and has been introduced to New South Wales, Australia.

Subspecies: The following subspecies are accepted:

• Nierembergia linariifolia subsp. glabriuscula (Dunal) A.A.Cocucci & Hunz.
• Nierembergia linariifolia subsp. linariifolia
• Nierembergia linariifolia subsp. pampeana (Millán) A.A.Cocucci & Hunz.
• Nierembergia linariifolia subsp. pinifolioides (Millán) A.A.Cocucci & Hunz.