Promachoteuthis

{{Short description|Genus of squids}}

{{Automatic taxobox

| image = Promachoteuthis sloani third specimen.JPG

| image_caption = Promachoteuthis sloani

| parent_authority = Naef, 1912

| display_parents = 2

| taxon = Promachoteuthis

| authority = Hoyle, 1885

| type_species = Promachoteuthis megaptera

| type_species_authority = Hoyle, 1885{{cite WoRMS|author=Philippe Bouchet|year=2018|title=Promachoteuthis Hoyle, 1885|id=341454|access-date=17 March 2018|db=MolluscaBase}}

| subdivision_ranks = Species

| subdivision = Promachoteuthis megaptera

Promachoteuthis sloani

Promachoteuthis sulcus

}}

Promachoteuthis is a genus of small, weakly-muscled squid found at bathypelagic depths. Three species have been formally described, while another two await description. Promachoteuthis ranges in size from 10.5mm to 104mm. They can be found in waters as deep as 1550 to 3431 meters. Promachoteuthis possesses eight tentacles and two longer tentacles, each equipped with suckers.{{Cite journal |last1=Ortiz de Ortiz |first1=Danielle |last2=Baldoni |first2=Letícia Cazarin |last3=Muxagata |first3=Erik |last4=Vidal |first4=Erica Alvez Gonzalez |date=April 29, 2024 |title=Cephalopod paralarvae from the southeast–south Brazilian outer shelf and slope |url=https://link.springer.com/10.1007/s00227-024-04401-w |journal=Marine Biology |language=en |volume=171 |issue=4 |page=84 |doi=10.1007/s00227-024-04401-w |bibcode=2024MarBi.171...84O |issn=0025-3162|url-access=subscription }}