Megalagrion oahuense

{{Short description|Species of damselfly}}

{{Speciesbox

| image =

| status = VU

| status_system = IUCN3.1

| taxon = Megalagrion oahuense

| authority = (Blackburn, 1884)

| synonyms =

|status_ref={{cite iucn |author=Polhemus, D.A. |date=2020 |title=Megalagrion oahuense |volume=2020 |page=e.T12961A511184 |doi=10.2305/IUCN.UK.2020-1.RLTS.T12961A511184.en |access-date=17 November 2021}}

}}

Megalagrion oahuense is a species of damselfly in the family Coenagrionidae. It is endemic to Hawaii. It is the only known species of Zygoptera with terrestrial nymphs.