Olenekoceras

{{Short description|Genus of molluscs (fossil)}}

{{distinguish|Olenecoceras}}

{{Taxobox

| fossil_range = {{fossil range|Olenekian|ref={{cite web

| last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| accessdate = 2014-05-28 }}}}

| image =

| regnum = Animalia

| phylum = Mollusca

| classis = Cephalopoda

| subclassis = Ammonoidea

| ordo = Ceratitida

| familia = Sibiritidae

| subfamilia = Keyserlingitinae

| genus = Olenekoceras

| genus_authority =

| subdivision_ranks = Species {{cite web | title= Paleobiology Database - Olenekoceras | year = | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14271 | access-date = 17 December 2021 }}

| subdivision =

• O. laevigatum
• O. middendorffi
• O. nikitini
• O. schrenki

}}

Olenekoceras is an ammonoid cephalopod from the Lower Triassic included in the ceratitid family Sibiritidae, once included in the Noritaceae but now in the Ceratitaceae.