| Asthenocormus Temporal range: | |
|---|---|
| Fossil of Asthenocormus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Pachycormiformes |
| Family: | †Pachycormidae |
| Subfamily: | †Asthenocorminae |
| Genus: | †Asthenocormus Woodward, 1895 |
| Species: | †A. titanius |
| Binomial name | |
| †Asthenocormus titanius (Wagner, 1863) | |
| Synonyms | |
| |

Asthenocormus is an extinct genus of large marine pachycormiform ray-finned fish. It contains a single species, A. titanius. A member of the edentulous suspension feeding clade within the Pachycormiformes, fossils have been found in the Late Jurassic (Tithonian)-aged plattenkalks of Bavaria, Germany, primarily from the Solnhofen Limestone. In 2024, a partial caudal fin of an indeterminate Asthenocormus (tentatively assigned to A. titanius) was described from lower Tithonian-aged Kimmeridge Clay of England.