Discoteuthis discus

{{Short description|Species of squid}}

{{Speciesbox

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Barratt, I. |author2=Allcock, L. |date=2014 |title=Discoteuthis discus |volume=2014 |page=e.T163256A990506 |doi=10.2305/IUCN.UK.2014-1.RLTS.T163256A990506.en |access-date=18 November 2021}}

| taxon = Discoteuthis discus

| authority = Young & Roper, 1969{{cite web | url = http://www.marinespecies.org/aphia.php?p=taxdetails&id=342234 | title = Discoteuthis discus Young & Roper, 1969 | publisher = Flanders Marine Institute | author = Julian Finn| year = 2016 | work = World Register of Marine Species}}

| synonyms =

}}

Discoteuthis discus, the rounded disc-fin squid is a species of squid in the family Cycloteuthidae. They occur in the tropical and subtropical Atlantic Ocean and the central North Pacific. While mature specimens have not been found, the unnamed species Discoteuthis sp. A has been hypothesised as the mature form.