Hammerjaw
Omosudis lowii
- Least concern
- Card rarity: Common
- Fish

The hammerjaw, Omosudis lowii, is a small deep-sea aulopiform fish, found worldwide in tropical and temperate waters to 4,000 m (13,000 ft) depth. It is the only representative of its family, Omosudidae.
Classification
- Class
- Actinopterygii
- Order
- Aulopiformes
- Family
- Omosudidae
- Genus
- Omosudis