Rhantus papuanus

{{short description|Species of beetle}}

{{Speciesbox

| image =

| status = EX

| status_system = IUCN2.3

| taxon = Rhantus papuanus

| authority = Balfour-Browne, 1939

| synonyms =

|status_ref={{cite iucn |author=World Conservation Monitoring Centre |date=1996 |title=Rhantus papuanus |volume=1996 |page=e.T19462A8894739 |doi=10.2305/IUCN.UK.1996.RLTS.T19462A8894739.en |access-date=16 November 2021}}

}}

Rhantus papuanus was a species of beetle in family Dytiscidae. It was endemic to Papua New Guinea.