| Eosipterus Temporal range: Early Cretaceous,
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| Holotype specimen of E. yangi | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Pterosauria |
| Suborder: | †Pterodactyloidea |
| Family: | †Ctenochasmatidae |
| Tribe: | †Pterodaustrini |
| Genus: | †Eosipterus Ji & Ji, 1997 |
| Type species | |
| †Eosipterus yangi Ji & Ji, 1997
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Eosipterus is an extinct genus of ctenochasmatid pterosaur from the Early Cretaceous period of Liaoning, China. Fossil remains of Eosipterus dated back to the Aptian stage of the Early Cretaceous, 125 million years ago.