Stenogyne campanulata is a rare species of flowering plant in the mint family known by the common name Kalalau Valley stenogyne.

[3] It is endemic to Hawaii, where it is known only from the Kalalau Valley on the island of Kauai.

[2] It is a federally listed endangered species of the United States.

This plant was first discovered in 1986 growing on a Kalalau Valley cliff in Na Pali Coast State Park, and it was described to science as a new species in 1989.

The plant is threatened by habitat degradation caused by feral pigs and introduced plant species such as air plant (Kalanchoe pinnata).