Cyanea hardyi

{{Short description|Species of flowering plant}}

{{More citations needed|type =plant|auto=yes|date=December 2009}}

{{Speciesbox

|image = Cyanea hardyi (Limahuli Garden and Preserve).JPG

|image_caption = Cyanea hardyi growing in Limahuli Garden and Preserve

|status = EN

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Walsh, S. |author2=Nyberg, B. |author3=Wood, K. |date=2020 |title=Cyanea hardyi |volume=2020 |page=e.T33581A83791283 |doi=10.2305/IUCN.UK.2020-1.RLTS.T33581A83791283.en |access-date=19 November 2021}}

|genus = Cyanea

|species = hardyi

|authority = Rock

}}

Cyanea hardyi, known in Hawaiian as hāhā, is a species of flowering plant in the bellflower family, Campanulaceae. This Hawaiian lobelioid is endemic to southern Kaua{{okina}}i. It inhabits forested valleys up to an elevation of {{convert|790|m|ft|abbr=on}}.