Hypaeus poseidon
{{Short description|Species of spider}}
{{Speciesbox
| genus = Hypaeus
| species = poseidon
| authority = Araújo & Ruiz, 2015
}}
Hypaeus poseidon is a species of jumping spider from the Brazilian Amazon, specifically São Félix do Xingu, Pará.{{cite journal|last1=Araújo|first1=Magda H.S.|last2=Ruiz|first2=Gustavo R.S.|title= Description of four new species of Hypaeus Simon and redescription of H. taczanowskii Mello-Leitão (Araneae: Salticidae: Amycinae)