Orconectes inermis

{{Short description|Species of crayfish}}

{{Speciesbox

| name = Northern cave crayfish

| image =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Adams, S.|author2= Schuster, G.A. |author3= Taylor, C.A. |name-list-style=amp |year= 2010 |title=Orconectes inermis |page= e.T62026A12578263 |doi=10.2305/IUCN.UK.2010-3.RLTS.T62026A12578263.en|access-date=19 February 2023}}

| status2 = G5

| status2_system = TNC

| status2_ref = {{cite web |title=Orconectes inermis |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.117974/Orconectes_inermis |website=NatureServe Explorer An online encyclopedia of life |version=7.1|publisher=NatureServe|access-date=19 February 2023}}

| genus = Orconectes

| species = inermis

| authority = (Cope, 1872)

| synonyms =

| synonyms_ref =

}}

Orconectes inermis, the Northern cave crayfish, is a troglomorphic freshwater crayfish native to Kentucky and Indiana in the United States.

There are two sub-species described;

• Orconectes inermis inermis, known as ghost grayfish
• Orconectes inermis testii (Hay, 1891), known as unarmed crayfish

The two sub-species are known to form intergrades in the range where they overlap.